CN204582151U - The anti-acupuncture needleless of card form connects venous detaining needle - Google Patents

Abstract

The utility model belongs to the field of medical appliances, in particular to a card-type anti-acupuncture needleless connection venous indwelling needle, including a sheath, a catheter assembly, a steel needle, a needle seat, a stop clip, an extension tube and a needleless joint, and the catheter assembly The card holder and the card are arranged between the needle holder and the steel needle passage cavity is arranged in the card holder, the pinholes are arranged at the top and middle of the card holder, the card foot groove is arranged outside the card holder, and the card includes the top protective positioning end and the bottom The installation end, the installation end is provided with card feet corresponding to the card foot groove, and the pinhole corresponding to the middle position on the steel needle is provided with positioning indentations. This new type is active and safe to prevent needlestick injuries. It only needs to pull out the fin-shaped needle holder after the puncture is successful, without any other actions, and the operation is more convenient and safe. When the infusion is completed and the needleless connector of the infusion set is pulled out, a positive pressure will be generated, and a certain amount of liquid medicine will flow out from the end of the catheter to ensure positive pressure to seal the tube to effectively reduce blood backflow, achieve a reasonable indwelling time, and better reflect the indwelling Needle meaning.

Description

Card type anti-needle needleless connection intravenous indwelling needle

technical field

The utility model relates to a card-type anti-acupuncture needleless connecting venous indwelling needle, which belongs to the field of medical appliances.

Background technique

Infusion nursing is an important and commonly used nursing operation in clinical nursing. In recent years, the scope of application of intravenous indwelling needles has been continuously expanded, and it is now widely used in various clinical departments. However, a large number of domestic studies have proved that nurses are a high-risk occupational group for blood-borne diseases, and wounds caused by cuts and needle sticks are often seen on the hands of nurses. At present, nurses in most hospitals in my country do not wear gloves when performing peripheral venipuncture, which may cause pollution due to the blood flowing out when the needle core is pulled out. Anti-acupuncture venous indwelling needle, due to the patented design of the needle tip protection system, the needle tip is automatically stored in the protective sleeve when the needle core is pulled out, and cannot be restored, leaving no residual blood on the surface, so that the nurse avoids blood contact during the entire operation , so that nurses can also stay away from the threat of needle stick injury.

Utility model content

The technical problem to be solved by the utility model is: to provide a needle-free infusion joint that can prevent medical staff from being stabbed after vein puncture, and a needle-free infusion joint that is directly connected to the outer conical joint of the infusion set, and is safe and convenient to use. The needle is connected to an IV catheter.

The card-type anti-acupuncture needleless connection venous indwelling needle described in the utility model includes a sheath, a catheter assembly, a steel needle, a needle seat, a flow-stop clip, an extension tube and a needleless joint, and the catheter assembly and the needle seat are arranged The card holder and the card, the steel needle passage cavity is set in the card holder, the pinholes are set at the top and middle of the card holder, the card foot groove is provided outside the card holder, the card includes the top protective positioning end and the bottom installation end, and the installation end corresponds to The card foot groove is provided with a card foot, and the pinhole on the upper part of the steel needle corresponding to the middle part of the card holder is provided with a positioning indentation.

The anti-acupuncture device includes a card holder and a stainless steel card. The stainless steel card has four card feet. The card holder has a stainless steel card foot slot. The card holder has two pinholes. The four card feet of the card are inserted into the slots of the card feet on the card holder. The steel needle passes through the pinhole on the card holder to stretch the stainless steel card so that it hooks the catheter holder. After the puncture is completed, the needle holder is pulled to drive the steel needle toward the After moving, when the needle tip of the steel needle breaks away from the pinpoint clamping position on the stainless steel card, the stainless steel card resets, the needle tip is blocked by the stainless steel card, and the card holder is separated from the catheter holder. When the indentation of the steel needle moves to the pinhole position in the middle of the card holder At this time, because the size of the outer circle of the indentation of the steel needle is larger than the size of the pinhole of the card holder, the steel needle will take the card holder out to play a protective role.

The needleless joint includes a connecting seat, a cavity is arranged in the connecting seat, the cavity is bonded to the extension tube, the connecting seat is installed on the upper part of the housing, a liquid tank communicated with the connecting seat is arranged on the upper part of the housing, and a capsule is arranged on the lower part of the housing , there is a gap under the capsule port. There are multiple liquid tanks inside the housing, one end of the connecting seat is bonded to the extension tube, and there is a set of liquid channels in the housing to communicate with the liquid tanks. When working, the infusion joint is screwed with the housing to push the capsule to move inward. The capsule deforms from the gap to form a liquid channel, completing the needle-free connection with the infusion interface, and the liquid fills the entire outer cavity of the capsule. When the infusion is completed, unscrew the infusion interface, and the capsule resumes its deformation, pushing the liquid forward. thereby creating a positive pressure.

The capsule in the needleless joint is made of silicone rubber, the outer diameter of the capsule is larger than the inner diameter of the housing, and the two are interference fit. Ensure that the system does not leak before infusion.

The beneficial effects of the utility model are:

This new type is active and safe to prevent needlestick injuries. It only needs to pull out the fin-shaped needle holder after the puncture is successful, without any other actions, and the operation is more convenient and safe. When the infusion is completed and the needleless connector of the infusion set is pulled out, a positive pressure will be generated, and a certain amount of liquid medicine will flow out from the end of the catheter to ensure positive pressure to seal the tube to effectively reduce blood backflow, achieve a reasonable indwelling time, and better reflect the indwelling Needle meaning.

Description of drawings

Fig. 1 is a schematic structural view of the utility model before use.

Fig. 2 is a schematic diagram of the cross-sectional structure of A-A in Fig. 1 .

FIG. 3 is a schematic structural view of the housing in FIG. 2 .

Fig. 4 is a schematic structural view of the needleless connector in Fig. 2 in use.

Fig. 5 is a schematic cross-sectional structure diagram of the catheter assembly, the steel needle, and the needle holder in Fig. 1 before use.

Fig. 6 is a schematic structural view of the steel needle detachment catheter assembly in Fig. 5 .

FIG. 7 is a structural schematic diagram of the card holder and the card release guide assembly in FIG. 6 .

Fig. 8 is a schematic structural diagram of the card in Fig. 7 .

FIG. 9 is a schematic structural view of the card holder in FIG. 7 .

Fig. 10 is a structural schematic diagram of the steel needle in Fig. 7 .

FIG. 11 is a schematic diagram of a partially enlarged structure of part A in FIG. 10 .

In the figure: 1. Sheath 2. Catheter assembly 3. Positioning indentation 4. Needle seat 5. Stop clip 6. Extension tube 7. Needleless connector 8. Connection seat 9. Capsule 10. Shell 11. Fluid tank 12 , infusion connector 13, steel needle 14, catheter 15, catheter holder 16, card 17, card holder 18, top protective positioning end 19, clip foot 20, needle hole 21, steel needle through the cavity.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figures 1 to 11, the card type anti-acupuncture needleless connection intravenous indwelling needle described in the utility model includes a sheath 1, a catheter assembly 2, a needle seat 4, a steel needle 13, a flow stop clip 5, an extension Tube 6 and needleless connector 7, catheter assembly 2 includes catheter 14 and catheter adapter 15, card holder 17 and card 16 are arranged between catheter adapter 15 and needle holder 4, steel needle passage cavity 21 is arranged in card holder 17, card holder 17 Pinholes 20 are set at the top and middle positions of the card holder 17, card foot slots are provided on the outside of the card holder 17, and the card 16 includes a top protective positioning end 18 and a bottom installation end, and the installation end corresponds to the card foot slot. A positioning indentation 3 is provided corresponding to the pinhole 20 at the middle position. The needleless joint 7 includes a connection seat 8, a cavity is arranged in the connection seat 8, and the cavity is bonded to the extension tube 6, the connection seat 8 is installed on the upper part of the housing 10, and the upper part of the housing 10 is provided with a liquid tank 11 communicating with the connection seat 8 , the lower part of the housing 10 is provided with a capsule 9, and a gap is provided below the port of the capsule 9. The capsule in the needleless joint 7 is made of silicone rubber, the outer diameter of the capsule is larger than the inner diameter of the housing 10 , and there is an interference fit between the two.

When used for patients, the four clips 19 of the stainless steel card 16 are snapped into the card foot slots on the card holder 17, and the steel needle 13 passes through the two pinholes 20 on the card holder 17, and the stainless steel card 16 is stretched to make it hook the catheter Seat 15, pull the needle seat 4 after the puncture of the patient is completed, so that it drives the steel needle 13 to move backward. When the needle point of the steel needle 13 is separated from the needle point on the stainless steel card 16, the stainless steel card 16 is reset, and the needle point is covered by the stainless steel card 16. Block the card holder 17 from the catheter holder 15. When the positioning indentation 3 of the steel needle 13 moves to the pinhole 20 in the middle of the card holder 17, the outer circle size of the positioning indentation 3 of the steel needle 13 is larger than that of the card holder. Pinhole 20 size, steel needle 13 brings card holder 17 out.

When the needleless connector 7 is working, the infusion connector 12 is screwed to the bottom of the housing 10, pushing the capsule 9 to move inward, and the capsule 9 is deformed from the gap to form a liquid channel, completing the needleless connection with the infusion interface, and the liquid fills the entire body. In the cavity around the capsule 9, when the infusion is completed, the infusion interface is unscrewed, the capsule 9 recovers its deformation, and pushes the liquid forward to generate a positive pressure.

Claims (3)

1. A card-type anti-acupuncture needle-free connection intravenous indwelling needle, including a sheath (1), a catheter assembly (2), a steel needle (13), a needle seat (4), a flow-stop clip (5), and an extension tube (6) and needleless joint (7), it is characterized in that: card holder (17) and card (16) are arranged between catheter assembly (2) and needle holder (4), and steel needle is arranged in card holder (17) to pass through Cavity (21), pinhole (20) is set on the top and middle position of card holder (17), the outside of card holder (17) is provided with card foot groove, and card (16) includes top protection positioning end (18) and bottom The installation end is provided with a card foot (19) corresponding to the card foot slot at the installation end, and a positioning indentation (22) is provided on the steel needle (13) corresponding to the pinhole (20) at the middle position. 2. The card-type anti-acupuncture needleless connection intravenous indwelling needle according to claim 1, characterized in that: the needleless connector (7) includes a connection seat (8), and a cavity is arranged in the connection seat (8). Bonded with the extension tube (6), the connecting seat (8) is installed on the upper part of the housing (10), the upper part of the housing (10) is provided with a liquid tank (11) communicating with the connecting seat (8), and the lower part of the housing (10) The capsule (9) is arranged, and a gap is arranged under the port of the capsule (9). 3. The card-type anti-acupuncture needleless connection venous indwelling needle according to claim 2, characterized in that: the capsule (9) in the needleless joint (7) is made of silicone rubber, and the outer diameter of the capsule (9) is larger than the shell The size of the body (10) internal diameter is an interference fit between the two.