阅读说明：本技术 一种心内科穿刺针 (Intracardiac branch of academic or vocational study pjncture needle ) 是由 王庆捷 于 2019-07-25 设计创作，主要内容包括：本发明涉及一种心内科穿刺针,包括外管、内管、防护盖体、推柄和活塞式挤压头,所述的内管固定在外管内,所述的内管从上到下依次是由储液段、调节段和端头依次连成一体所组成,所述的储液段内开设有用于储液的腔体,所述的活塞式挤压头活动连接在储液段内并与推柄相连,所述的防护盖体是由盖帽段和连接段所组成,所述的盖帽段可拆卸地连接在连接段的上端,所述的连接段呈圆筒状,所述的连接段的内壁上设置有内接螺纹,所述的外管上端的外壁上设置有外接螺纹,所述的连接段通过内接螺纹与外接螺纹的配合连接在外管上,所述的推柄位于盖帽段内。本设计具有结构简单、易于制造和实用高效的优点。(The invention relates to an intracardiac puncture needle, which comprises an outer tube, an inner tube, a protective cover body, a push handle and a piston type extrusion head, wherein the inner tube is fixed in the outer tube, the inner tube is sequentially formed by sequentially connecting a liquid storage section, an adjusting section and an end head into a whole from top to bottom, a cavity for storing liquid is formed in the liquid storage section, the piston type extrusion head is movably connected in the liquid storage section and connected with the push handle, the protective cover body is formed by a cap section and a connecting section, the cap section is detachably connected at the upper end of the connecting section, the connecting section is cylindrical, internal threads are arranged on the inner wall of the connecting section, external threads are arranged on the outer wall of the upper end of the outer tube, the connecting section is connected to the outer tube through the matching of the internal threads and the external threads, and the push handle is positioned in the cap section. The design has the advantages of simple structure, easy manufacture, practicality and high efficiency.)

1. A puncture needle for cardiology is characterized in that: comprises an outer tube (1), an inner tube, a protective cover body, a push handle (4) and a piston type extrusion head (5), wherein the inner tube is fixed in the outer tube, the inner tube is sequentially formed by sequentially connecting a liquid storage section (2-1), an adjusting section (2-2) and an end head (2-3) into a whole from top to bottom, a cavity for storing liquid is formed in the liquid storage section, the piston type extrusion head (5) is movably connected in the liquid storage section and connected with the push handle, the protective cover body is formed by a cap section (3-2) and a connecting section (3-1), the cap section (3-2) is detachably connected at the upper end of the connecting section (3-1), the connecting section is cylindrical, the inner wall of the connecting section is provided with an internal connection thread, the outer wall of the upper end of the outer tube is provided with an external connection thread, the connecting section is connected to the outer tube through the matching of the internal thread and the external thread, and the push handle is positioned in the cap section.

2. An intracardiac puncture needle according to claim 1, characterized in that: the bottom plate of block section be provided with connect protruding (15), the top of linkage segment be provided with connect protruding assorted spread groove, the protruding swing joint of connection in the spread groove, spread groove and connect and be provided with elasticity chucking mechanism between protruding.

3. An intracardiac puncture needle according to claim 2, characterized in that: elasticity chucking mechanism including offer recess (12) on the spread groove inner wall, offer hemisphere draw-in groove (11), spherical dop (14) and first spring (13) on connecting protruding outer wall, spherical dop (14) connect in the recess through first spring (13), spherical dop block under the effect of first spring in the hemisphere dop.

4. An intracardiac puncture needle according to claim 1, characterized in that: the outer wall of regulation section on be provided with the draw-in groove, the draw-in groove in detachably be connected with fixture block (7), the lateral wall of outer tube on set up threaded hole, threaded hole in-connection have adjusting bolt (6), adjusting bolt (6) pass the screw hole and stretch into to the outer tube in and with fixture block swing joint, the fixture block connect in the draw-in groove under adjusting bolt's drive to make the inner tube fix in the outer tube.

5. An intracardiac puncture needle according to claim 1, characterized in that: the adjusting section in be connected with flow control valve leaf (10) through pivot (9), the one end of pivot (9) pass inner tube and outer tube in proper order and still install turning handle (8) on it, flow control valve leaf on still seted up and flow through passageway (10-1), the exit of flowing through the passageway be provided with the pressure valve.

6. An intracardiac puncture needle according to claim 5, characterized in that: the pressure valve comprises a valve barrel (16), a valve core (17), a second spring (19) and a valve seat (20), one end of the valve barrel is fixed on the outer wall of the flow regulating valve blade, the valve seat (20) is installed at the other end of the valve barrel, the valve core is arranged in the valve barrel and is right opposite to the overflowing channel, the second spring is arranged between the valve core and the valve seat, a through hole (18) is formed in the side wall of the valve barrel, and the through hole is sealed through the valve core.

7. An intracardiac puncture needle according to claim 1, characterized in that: the end head is provided with a fluid channel, the fluid channel consists of an oblique channel and a vertical channel, and the oblique channels and the vertical channel are communicated in a gathering mode.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a puncture needle for cardiology.

Background

For the clinical treatment of patients with pericardial fluid, puncturing and extracting methods are mostly adopted. At present, a traditional needle head is generally adopted for puncture, because the front end of the needle head is relatively sharp, after the needle head is transmitted into the pericardium, because the heart continuously beats, the traditional needle head is easy to stab the myocardium, even the heart is suddenly stopped, and great potential safety hazards exist; moreover, because the physical conditions of each patient are different, the puncture needle in the prior art cannot adjust the flow passing through the needle body, and the applicability of the puncture needle is influenced to a certain extent.

Disclosure of Invention

According to the invention, the protective cover body is designed on the outer tube, the push handle is protected by the protective cover body, so that the push handle is prevented from being extruded out of medicaments by external force in the transportation process, the effect of reducing unnecessary loss is achieved, and the intracardiac puncture needle is provided.

In order to solve the technical problem, the invention provides a puncture needle for cardiology department, which is characterized in that: the inner tube is fixed in the outer tube, the inner tube is sequentially formed by sequentially connecting a liquid storage section, an adjusting section and an end into a whole from top to bottom, a cavity for storing liquid is formed in the liquid storage section, the piston type extrusion head is movably connected in the liquid storage section and connected with the push handle, the protective cover body is formed by a cap section and a connecting section, the cap section is detachably connected to the upper end of the connecting section, the connecting section is cylindrical, an internal thread is arranged on the inner wall of the connecting section, an external thread is arranged on the outer wall of the upper end of the outer tube, the connecting section is connected to the outer tube through the matching of the internal thread and the external thread, and the push handle is located in the cap section.

Further: the bottom plate of block section be provided with connect protruding, the top of linkage segment be provided with connect protruding assorted spread groove, the protruding swing joint of connection in the spread groove, spread groove and connection protruding between be provided with elasticity chucking mechanism.

And further: elasticity chucking mechanism including offer recess on the spread groove inner wall, offer hemisphere draw-in groove, spherical dop and the first spring on connecting protruding outer wall, spherical dop pass through first spring coupling in the recess, spherical dop block under the effect of first spring in the hemisphere dop.

And further: the outer wall of regulation section on be provided with the draw-in groove, draw-in groove in detachably be connected with the fixture block, the lateral wall of outer tube on set up threaded hole, threaded hole in-connection have adjusting bolt, adjusting bolt pass the screw hole stretch into to the outer tube in and with fixture block swing joint, the fixture block connect in the draw-in groove under adjusting bolt's drive to make the inner tube fix in the outer tube.

And further: the flow regulating valve is characterized in that a flow regulating valve blade is connected in the regulating section through a rotating shaft, one end of the rotating shaft sequentially penetrates through the inner pipe and the outer pipe, a rotating handle is further mounted on the rotating shaft, a flow passage is further formed in the flow regulating valve blade, and a pressure valve is arranged at an outlet of the flow passage.

And further: the pressure valve comprises a valve barrel, a valve core, a second spring and a valve seat, wherein one end of the valve barrel is fixed on the outer wall of the flow regulating valve blade, the valve seat is installed at the other end of the valve barrel, the valve core is arranged in the valve barrel and faces the overflowing channel, the second spring is arranged between the valve core and the valve seat, a through hole is formed in the side wall of the valve barrel, and the through hole is sealed through the valve core.

And further: the end head is provided with a fluid channel, the fluid channel consists of an oblique channel and a vertical channel, and the oblique channels and the vertical channel are communicated in a gathering mode.

After the structure is adopted, the protective cover body is designed on the outer tube, the push handle is protected by the protective cover body, the push handle is prevented from being extruded out of the medicament by external force in the transportation process, and the effect of reducing unnecessary loss is achieved; and the design also has the advantages of simple structure, easy manufacture, practicality and high efficiency.

Drawings

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

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of a in fig. 1.

Fig. 3 is a structural view of the pressure valve.

Detailed Description

As shown in figure 1, the intracardiac puncture needle comprises an outer tube 1, an inner tube, a protective cover body, a push handle 4 and a piston type extrusion head 5, wherein the inner tube is fixed in the outer tube, the inner tube is sequentially formed by sequentially connecting a liquid storage section 2-1, an adjusting section 2-2 and an end head 2-3 into a whole from top to bottom, a cavity for storing liquid is formed in the liquid storage section, the piston type extrusion head 5 is movably connected in the liquid storage section and connected with the push handle, the protective cover body is formed by a cap section 3-2 and a connecting section 3-1, the cap section 3-2 is detachably connected to the upper end of the connecting section 3-1, the connecting section is cylindrical, internal threads are arranged on the inner wall of the connecting section, external threads are arranged on the outer wall of the upper end of the outer tube, and the connecting section is connected to the outer tube through the matching of the internal threads and the external threads, the push handle is positioned in the cap section. According to the invention, the protective cover body is designed on the outer tube, the push handle is protected by the protective cover body, so that the push handle is prevented from being extruded out of the medicament by external force in the transportation process, and the effect of reducing unnecessary loss is achieved; and the design also has the advantages of simple structure, easy manufacture, practicality and high efficiency.

The bottom plate of the cap section shown in fig. 1 is provided with a connecting bulge 15, the top of the connecting section is provided with a connecting groove matched with the connecting bulge, the connecting bulge is movably connected in the connecting groove, and an elastic clamping mechanism is arranged between the connecting groove and the connecting bulge.

The elastic clamping mechanism shown in fig. 2 comprises a groove 12 formed in the inner wall of the connecting groove, a hemispherical clamping groove 11 formed in the outer wall of the connecting protrusion, a spherical clamping head 14 and a first spring 13, wherein the spherical clamping head 14 is connected into the groove through the first spring 13, and the spherical clamping head is clamped into the hemispherical clamping head under the action of the first spring.

As being provided with the draw-in groove on the outer wall of the regulation section shown in fig. 1, the draw-in groove in detachably be connected with fixture block 7, the lateral wall of outer tube on set up threaded hole, threaded hole in-connection have adjusting bolt 6, adjusting bolt 6 pass the threaded hole stretch into to the outer tube in and with fixture block swing joint, the fixture block connect in the draw-in groove under adjusting bolt's drive to make the inner tube fix in the outer tube.

As shown in fig. 1, a flow regulating valve blade 10 is connected in the regulating section through a rotating shaft 9, one end of the rotating shaft 9 sequentially penetrates through the inner tube and the outer tube and is also provided with a rotating handle 8, the flow regulating valve blade is also provided with a flow passage 10-1, and an outlet of the flow passage is provided with a pressure valve.

The pressure valve shown in fig. 3 includes a valve cylinder 16, a valve core 17, a second spring 19 and a valve seat 20, wherein one end of the valve cylinder is fixed on the outer wall of the flow regulating valve blade, the valve seat 20 is installed at the other end of the valve cylinder, the valve core is arranged in the valve cylinder and faces the overflowing channel, the second spring is arranged between the valve core and the valve seat, a through hole 18 is arranged on the side wall of the valve cylinder, and the through hole is sealed by the valve core.

The tip shown in fig. 1 is provided with a fluid channel, the fluid channel is composed of an oblique channel and a vertical channel, and the oblique channels and the vertical channel are gathered and communicated.