CN211798020U

CN211798020U - Remaining needle

Info

Publication number: CN211798020U
Application number: CN201921909105.3U
Authority: CN
Inventors: 关元乐; 肖卫涛; 杨建鑫
Original assignee: BEIJING FERT TECHNOLOGY CO LTD
Current assignee: BEIJING FERT TECHNOLOGY CO LTD
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-10-30
Anticipated expiration: 2029-11-07

Abstract

The utility model provides a keep somewhere needle, including interconnect's pipe seat (1), briquetting (2), silica gel hose (3) and connector (4), wherein the both ends of silica gel hose (3) are cup jointed respectively on pipe seat (1) and connector (4), through briquetting (2) and with pipe seat (1) and connector (4) clearance fit. Set up the screw thread of mutually supporting on briquetting (2) and pipe seat (1) and connector (4) and detain, briquetting (2) are connected through the screw thread with pipe seat (1) and connector (4), and the position that briquetting (2) and pipe seat (1) and connector (4) are connected is the toper structure, screws up in-process briquetting (2) and pipe seat (1) cooperation at the screw thread and more tightens until compressing tightly silica gel hose (2) fixedly. Silica gel hose chooses the silica gel material for use, and structural glue that does not bond, the cooperation is not interference fit, and the equipment process is simple, can manual operation, saves the cost, improves production efficiency.

Description

Remaining needle

Technical Field

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

Background

The venous indwelling needle is also called as a static trocar and consists of a stainless steel needle core, a soft outer sleeve and a plastic needle seat, wherein the outer sleeve and the needle core are simultaneously punctured into a blood vessel during puncture, and after the sleeve is sent into the blood vessel, the needle core is drawn out, and only the soft outer sleeve is left in the blood vessel for transfusion or other operations. The indwelling needle is simple to operate, relieves the pain of a patient caused by repeated puncture, protects blood vessels, reduces liquid extravasation, ensures reasonable medication time, provides convenience for blood transfusion and fluid infusion, reserves an open venous channel, is convenient for rescue work, reduces the workload of nursing staff to a great extent, and is suitable for patients who are transfused for a long time, old patients and patients without independent consciousness, especially critical patients.

The components of the core of the indwelling needle comprise a soft catheter which can be indwelling in a blood vessel and a stainless puncture guiding needle core. When in use, the catheter and the needle core are punctured into a blood vessel together, after the catheter completely enters the blood vessel, the needle core is withdrawn, and only the soft catheter is left in the blood vessel so as to carry out transfusion or hemodialysis treatment. Is convenient for clinical medication, emergency treatment medication for critical patients, relieves the workload of nurses and reduces the pain of children patients, so the indwelling needle is widely applied clinically. Silica gel has special physiological function, can be 'intimate and seamless' with human body, does not exclude the silica gel from human body, can be completely combined with human tissue after a certain time, and has extremely good stability. Silica gel is a particularly important class of medical polymer materials, has excellent physiological inertia, is nontoxic, tasteless, non-corrosive, anticoagulative, good in compatibility with organisms and can stand harsh disinfection conditions. Can be processed into pipes, sheets, films and special-shaped components as required, and can be used as medical instruments, artificial organs and the like.

Through understanding and analysis to current product, most lien needles that exist on the existing market adopt the silica gel hose, and its connected mode includes:

as shown in figure 1, the device comprises a conduit 1 ', a rivet 2 ', a conduit seat 3 and a silica gel hose 4 ', and glue is selected for bonding on a mechanism, so that the process is complicated, and the production efficiency is reduced.

The above prior art has the above disadvantages, and thus it is necessary to design a new form of an indwelling needle.

Disclosure of Invention

In order to overcome the above-mentioned problem that prior art exists, the utility model provides a keep somewhere needle, the connection of pipe seat, connector and silica gel hose does not bond with glue and also is connected with interference fit, but compresses tightly through 2 briquettings through clearance fit and connects to reduce to keep somewhere the influence to the patient, the equipment is easier, raises the efficiency, practices thrift the cost.

An object of the utility model is to provide a keep somewhere needle, pipe seat 1, briquetting 2, silica gel hose 3 and connector 4 including interconnect, wherein the both ends of silica gel hose 3 are cup jointed respectively on pipe seat 1 and the connector 4, through briquetting 2 and with pipe seat 1 and 4 clearance fit of connector.

Preferably, the pressing block 2 and the catheter holder 1 are provided with mutually matched threaded fasteners, and the pressing block 2 and the connector 4 are provided with mutually matched threaded fasteners, so that the pressing block 2, the catheter holder 1 and the connector 4 are connected through threads.

Preferably, a connector annular groove 42 and a catheter hub annular groove 12 are formed on the connector 4 and the catheter hub 1 and the silicone hose 3 respectively, and a connector thread 41 and a catheter hub thread 11 are formed on the outer periphery of the end respectively.

Preferably, the compact 2 is formed with a compact annular groove 24 and an annular protrusion 22, and a compact screw 21 is formed on an inner circumferential surface of the compact annular groove 24; the annular projection 22 is inserted into the connector annular groove 42 or the catheter hub annular groove 12, and the press piece thread 21 is threadedly engaged with the connector thread 41 or the catheter hub thread 11.

Preferably, the connector annular groove 42 and the catheter hub annular groove 12 are inclined laterally and have a tapered structure, and the annular protrusion 22 has a shape matching with the tapered structure, so that the pressing block 2 is increasingly tightly matched with the catheter hub 1 and the connector 4 during screwing, and the silicone hose 3 is tightly pressed and fixed.

Preferably, the indwelling needle further comprises a catheter disposed in the catheter hub 1.

Preferably, two ends of the silicone hose 3 are respectively sleeved in the connector annular groove 42 and the catheter hub annular groove 12.

The beneficial effects of the utility model reside in that:

silica gel hose chooses the silica gel material for use, and structural glue that does not bond, the cooperation is not interference fit, and the equipment process is simple, can manual operation, saves the cost, improves production efficiency.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in view of the following description taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic diagram of a glue connection mode of a silica gel hose according to the prior art.

Fig. 2 is an overall structural view of an indwelling needle according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a connector according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a catheter hub according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of a briquetting structure according to an embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the present invention is not limited thereto.

Referring to fig. 2, the indwelling needle of the present invention comprises a catheter hub 1, two pressing blocks 2, a silicone hose 3 and a connector 4 which are connected with each other, wherein both ends of the silicone hose 3 are respectively sleeved on the catheter hub 1 and the connector 4, and are in clearance fit with the catheter hub 1 and the connector 4 through the pressing blocks 2. The catheter hub is used for sleeving a catheter (not shown), namely a part of the catheter is fixed in the catheter hub

Fig. 3 is a schematic structural diagram of a connector according to an embodiment of the present invention. Fig. 4 is a schematic view of a catheter hub according to an embodiment of the present invention. Referring to fig. 3 and 4, a connector annular groove 42 and a catheter hub annular groove 12 may be formed on the end portions of the connector 4, the catheter hub 1 and the silicone hose 3, respectively, and a connector thread 41 and a catheter hub thread 11 may be formed on the outer circumference of the end portions, respectively. Preferably, the indwelling needle further comprises a catheter disposed in the catheter hub 1.

Fig. 5 is a schematic view of a press block structure according to an embodiment of the present invention, referring to fig. 5, the press block 2 is formed with a press block annular groove 24 and an annular protrusion 22, and a press block thread 21 is formed on an inner circumferential surface of the press block annular groove 24; the annular projection 22 is inserted into the connector annular groove 42 or the catheter hub annular groove 12, and the press piece thread 21 is threadedly engaged with the connector thread 41 or the catheter hub thread 11 (see fig. 2).

As shown in fig. 3-4, the connector annular groove 42 and catheter hub annular groove 12 are sloped on the sides with a tapered configuration. For example, the connector annular groove 42 has a chamfer 43 and the catheter hub annular groove 12 has a chamfer 13, thereby providing an overall conical shape of the connector annular groove 42 and catheter hub annular groove 12. Of course, both side surfaces may be formed as slopes.

With reference to fig. 5, correspondingly, said annular projection 22 has a shape that cooperates with the conical structure, for example it has an inclined surface 23. During sleeving, two ends of the silicone hose 3 are respectively sleeved in the connector annular groove 42 and the catheter hub annular groove 12, so that the pressing block 2 is matched with the catheter hub 1 and the connector 4 more and more tightly in the process of screwing the threads, and the silicone hose 2 is pressed and fixed.

The assembly principle is as follows:

during assembly, 2 pressing blocks are firstly sleeved on the silica gel hose, one end of the silica gel hose is sleeved on the annular groove of the catheter seat, the clearance fit is easily assembled, then one pressing block 2 is moved to the 1 part of the catheter seat, the pressing block 2 and the catheter seat 1 are both provided with screw threads to be buckled, the pressing block is connected through the screw threads, the internal structure of the pressing block 2 is matched with the catheter seat 1 in the connection process, the matching part of the pressing block 2 and the catheter seat is of a conical structure, the pressing block is screwed up by the screw threads, the pressing block is matched with the catheter seat more and more tightly, and the silica gel hose 3 is directly compressed. Also, the silicone hose 3 can be easily fit-connected to the connector.

This embodiment silica gel hose chooses the silica gel material for use, and structural glue that does not bond, the cooperation is not interference fit, and the equipment process is simple, can manual operation, saves the cost, improves production efficiency.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by applying specific examples, and the descriptions of the above embodiments are only applicable to help understanding the principles of the embodiments of the present invention; meanwhile, the detailed description and the application scope of the embodiments of the present invention can be changed by those skilled in the art, and in summary, the content of the present description should not be construed as limiting the present invention.

Claims

1. An indwelling needle, comprising: the silica gel hose comprises a catheter seat (1), a pressing block (2), a silica gel hose (3) and a connector (4) which are connected with each other, wherein two ends of the silica gel hose (3) are respectively sleeved on the catheter seat (1) and the connector (4), and the two ends of the silica gel hose are in clearance fit with the catheter seat (1) and the connector (4) through the pressing block (2).

2. An indwelling needle as claimed in claim 1, in which: the pressing block (2) and the catheter seat (1) are provided with screw threads which are matched with each other, and the pressing block (2) and the connector (4) are provided with screw threads which are matched with each other, so that the pressing block (2) is connected with the catheter seat (1) and the connector (4) through the screw threads.

3. An indwelling needle as claimed in claim 1, in which: a connector annular groove (42) and a catheter hub annular groove (12) are formed on the connector (4) and the catheter hub (1) and the silicone hose (3) respectively, and a connector thread (41) and a catheter hub thread (11) are formed on the outer periphery of the end respectively.

4. An indwelling needle according to claim 3, wherein: the pressing block (2) is formed with a pressing block annular groove (24) and an annular protrusion (22), and a pressing block thread (21) is formed on the inner peripheral surface of the pressing block annular groove (24); the annular projection (22) is inserted into the connector annular groove (42) or the catheter hub annular groove (12), and the press piece thread (21) is screw-fitted with the connector thread (41) or the catheter hub thread (11).

5. An indwelling needle according to claim 4, wherein: the connector annular groove (42) and the catheter base annular groove (12) are inclined laterally and have conical structures, and the annular protrusion (22) has a shape matched with the conical structures, so that the pressing block (2) is matched with the catheter base (1) and the connector (4) more and more tightly in the process of screwing threads to press and fix the silicone hose (3).

6. An indwelling needle as claimed in claim 1, in which: further comprising a catheter arranged in the catheter hub (1).

7. An indwelling needle according to claim 3, wherein: the two ends of the silica gel hose (3) are respectively sleeved in the connector annular groove (42) and the catheter seat annular groove (12).