阅读说明：本技术 一种安全套管型超声引导下picc穿刺针 (PICC pjncture needle under guide of condom cast supersound ) 是由 李静 于 2019-09-24 设计创作，主要内容包括：本发明涉及一种安全套管型超声引导下PICC穿刺针。包括针芯座,在针芯座的顶面设置插块,在针芯座内设置有贯穿针芯座顶面的针芯,在针芯座的上方设置两端敞口的空心的套管座,在套管座的两侧设置侧翼,在套管座的上端对接设置有软套管,套管座的下端与插块可插接,当套管座与插块插接时针芯位于软套管内且针芯的上端位于软套管上端的上方,还包括当针芯与套管座分离时位于针芯上端的用于遮挡针芯尖端的安全夹,当套管座与插块插接时安全夹位于套管座内且位于针芯的中下部。本发明结构简单合理、使用安全方便。(The invention relates to a condom tube type PICC puncture needle guided by ultrasound. Including the nook closing member seat, the top surface at the nook closing member seat sets up the inserted block, be provided with the nook closing member that runs through nook closing member seat top surface in the nook closing member seat, set up the open hollow casing seat in both ends in the top of nook closing member seat, both sides at the casing seat set up the flank, upper end butt joint at the casing seat is provided with soft sleeve, the lower extreme and the inserted block of casing seat can peg graft, when casing seat and inserted block peg graft the nook closing member lie in soft sleeve and the upper end of nook closing member lie in the top of soft sleeve upper end, still include when the nook closing member and casing seat separation lie in the nook closing member that is used for sheltering from the sharp-pointed safety clamp of nook closing member upper end, when casing seat pegs graft. The invention has simple and reasonable structure and safe and convenient use.)

1. The utility model provides a PICC pjncture needle under guide of condom tubular supersound which characterized in that: comprises a needle core seat (1), an insert block (8) is arranged on the top surface of the needle core seat (1), a needle core (4) penetrating through the top surface of the needle core seat (1) is arranged in the needle core seat (1), a hollow sleeve seat (6) with two open ends is arranged above the needle core seat (1), the two sides of the sleeve seat (6) are provided with side wings (2), the upper end of the sleeve seat (6) is provided with a soft sleeve (3) in a butt joint way, the lower end of the sleeve seat (6) can be inserted and connected with an insertion block (8), when the sleeve seat (6) is inserted with the insert block (8), the needle core (4) is positioned in the soft sleeve (3) and the upper end of the needle core (4) is positioned above the upper end of the soft sleeve (3), and the safety clamp (5) which is positioned at the upper end of the needle core (4) and used for shielding the tip of the needle core (4) when the needle core (4) is separated from the sleeve seat (6), when the sleeve seat (6) is inserted with the insertion block (8), the safety clamp (5) is positioned in the sleeve seat (6).

2. The condom tube-type ultrasound guided PICC puncture needle according to claim 1, wherein: a convex part (9) is arranged below the needle point of the needle core (4), the diameter of the convex part (9) is gradually reduced from the middle part to the two ends until the diameter is the same as that of the needle core (4), the safety clamp (5) comprises a bottom plate (5-1), a through hole for the needle core (4) to pass through is arranged on the bottom plate (5-1), the maximum diameter of the convex part (9) is larger than that of the through hole, a support plate (5-2) is arranged at one end of the two side edges of the length direction of the bottom plate (5-1), the two support plates (5-2) are positioned at the two ends of the bottom plate (5-1), the support plates (5-2) are elastic plates, a space is arranged between the two support plates (5-2) and are crossed into an X shape in the horizontal direction, a shielding plate (5-3) is arranged at the upper end of the support plate (5-2), and the two shielding plates, the section of the adjacent edge of the two shielding plates (5-3) is arc, the vertical position of one shielding plate (5-3) is lower than that of the other shielding plate (5-3), when the sleeve seat (6) is inserted into the insertion block (8), the adjacent edges of the two baffle plates (5-3) are positioned at the two sides of the needle core (4), the distance of the connecting positions of the two baffle plates (5-3) and the corresponding support plate (5-2) in the direction parallel to the surface of the bottom plate (5-1) is the same as the inner diameter of the sleeve seat (6) and is larger than the width of the bottom plate (5-1), when the needle point of the needle core (4) is positioned below the two shielding plates (5-3), the two shielding plates (5-3) are intersected in the horizontal direction, and the distance between the connecting positions of the two shielding plates (5-3) and the corresponding support plate (5-2) in the direction parallel to the surface of the bottom plate (5-1) is smaller than the inner diameter of the sleeve seat (6).

3. The condom tube-type ultrasound guided PICC puncture needle according to claim 1, wherein: a needle cap (7) used for covering the needle core (4) and the soft sleeve (3) when the sleeve seat (6) is inserted with the insertion block (8) is arranged above the needle core seat (1).

4. The condom tube-type ultrasound guided PICC puncture needle according to claim 1, wherein: the bottom plate (5-1), the support plate (5-2) and the baffle plate (5-3) are integrally formed.

5. The condom tube-type ultrasound guided PICC puncture needle according to claim 1, wherein: the soft sleeve (3) is made of polyurethane.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a condom tube type PICC puncture needle guided by ultrasound.

Background

Specifically, the PICC catheter is an english abbreviation of central venous catheterization by peripheral venipuncture, which is a catheter for puncturing peripheral veins such as basilic vein, median cubital vein, cephalic vein of arm, and directly puncturing the catheter through great veins close to heart such as superior vena cava or subclavian vein under ultrasonic guidance or blind puncture to perform middle-term to long-term venous transfusion therapy, so as to avoid direct contact between medicine and arm vein, and the blood flow speed of great veins is high, so that medicine can be quickly diluted, and stimulation of medicine to blood vessels is prevented. Because the PICC catheter has the advantages of safety, effectiveness, high-permeability and high-irritation resistance, few complications and the like, the PICC catheter is widely popularized in China.

The PICC puncture needle needs to be used in the implantation of PICC pipe, and the puncture needle generally is the steel needle, and the main step that the PICC pipe was implanted includes: firstly, performing venipuncture under ultrasonic guidance by using a puncture needle; then, a guide wire is fed in through the puncture needle; and then the puncture needle is pulled out and sent into the introducer along the guide wire, and finally the guide wire is pulled out and the catheter is placed into a preset position through the introducer. When the PICC puncture needle is clinically used, the defects of difficulty in fixation, easiness in puncturing blood vessels and the like are overcome, puncture failure is caused, the pain and puncture cost of a patient are increased, and nursing staff are easy to be injured by the needle in the needle pulling process.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a condom tube type PICC (peripherally inserted central catheter) puncture needle under ultrasonic guidance, which has a simple and reasonable structure and is safe and convenient to use.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a PICC pjncture needle under guide of safe sleeve cast supersound, including the nook closing member seat, the top surface at the nook closing member seat sets up the inserted block, be provided with the nook closing member that runs through nook closing member seat top surface in the nook closing member seat, set up the open hollow casing seat in both ends in the top of nook closing member seat, set up the flank in the both sides of casing seat, the upper end butt joint at the casing seat is provided with soft sleeve, the lower extreme and the inserted block of casing seat can peg graft, when casing seat and inserted block peg graft hour nook closing member lie in soft sleeve and the upper end of nook closing member lie in the top of soft sleeve upper end, still include when the nook closing member separates with the casing seat and lie in the sharp safety clamp of nook closing member for sheltering from nook closing member upper end, when casing seat pegs.

Preferably: the safety clamp comprises a bottom plate, a through hole for the needle core to pass through is formed in the bottom plate, the maximum diameter of the protruding portion is larger than the diameter of the through hole, support plates are arranged at one ends of two side edges in the length direction of the bottom plate, the support plates are elastic plates and are positioned at two ends of the bottom plate, a space is formed between the two support plates and is intersected into an X shape in the horizontal direction, shielding plates are arranged at the upper ends of the support plates and are opposite to each other, the sections of the adjacent edges of the two shielding plates are arc-shaped, the vertical position of one shielding plate is lower than that of the other shielding plate, when the cannula holder is spliced with the insert block, the adjacent edges of the two shielding plates are positioned at two sides of the needle core, and the distance of the connecting positions of the two shielding plates and the corresponding support plates, which is parallel to the surface direction of the bottom plate, is the same as the inner diameter of the cannula holder and is larger than the width of the, when the needle point of the needle core is positioned below the two shielding plates, the two shielding plates are intersected in the horizontal direction, and the distance between the connecting positions of the two shielding plates and the corresponding support plate in the direction parallel to the surface of the bottom plate is smaller than the inner diameter of the sleeve seat.

Preferably: a needle cap used for covering the needle core and the soft cannula when the cannula seat is inserted with the plug block is arranged above the needle core seat.

Preferably: the bottom plate, the support plate and the shielding plate are integrally formed.

Preferably: the soft sleeve is made of polyurethane.

The invention has the beneficial effects that: the safety clamp structure is additionally arranged in the needle core safety device, when the needle core is sleeved with the soft sleeve, the safety clamp is not started, when the tip end of the needle core moves to the position below the shielding plate, the safety clamp is started, the needle tip is automatically closed to wrap the needle tip, and finally the needle core together with the needle core exits the sleeve seat, so that a nursing staff is prevented from being injured by the needle. In addition, before the needle core is not withdrawn, the blood of the patient can be controlled, and a large amount of outflow is prevented. After the needle core is withdrawn, the placed catheter is more convenient to be fed into the guide wire, is easy to fix and not easy to puncture the blood vessel, increases the puncture success rate, relieves the pain of patients and reduces the puncture cost.

Drawings

FIG. 1 is a schematic structural view of the socket and the plug block in a plugging state according to the present invention;

FIG. 2 (a) is a schematic structural view of a cannula holder and a soft cannula according to the present invention, and FIG. 2 (b) is a schematic structural view of a needle core holder and a needle core according to the present invention;

FIG. 3 is a schematic view of the structure of the present invention with the upper end of the needle core above the shielding plate;

FIG. 4 is a schematic view of the structure of the upper end of the needle core under the shielding plate.

In the figure: 1-a needle core seat; 2-flank; 3-a soft sleeve; 4-a needle core; 5-safety clamp; 5-1-a bottom plate; 5-2-support plate; 5-3-shielding plate; 6-a sleeve seat; 7-needle cap; 8-inserting blocks; 9-projection.

The following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings: