CN209154748U - It is a kind of can automatic rebounding remaining needle - Google Patents

Abstract

The utility model discloses an indwelling needle that can automatically rebound. On the basis of the existing indwelling needle, an anti-needle puncture mechanism is added. The handle on the side wall of the tube body; the two pieces of the V-shaped elastic sheet are provided with through holes, the front end of the needle tube is provided with a diamond-shaped pinhole, the width of the diamond-shaped pinhole is greater than the diameter of the needle tube, and the diamond-shaped pinhole is The slope of the first half of the pinhole is smaller than the slope of the second half, and the diameter of the through hole is smaller than the width of the diamond-shaped needle hole, so that the needle tube cannot be pulled out of the anti-needle stick mechanism after passing through the through hole on the V-shaped shrapnel; The side wall of the needle seat is provided with an elastic buckle, and the handle is provided with a clamping groove matched with the elastic buckle; the needle tube is an arc-shaped needle tube. The utility model enables the needle tube to be accommodated in the anti-needle stick mechanism after being pulled out from the hose, thereby preventing the needle from contacting the medical staff and protecting the medical staff.

Description

An indwelling needle that can automatically rebound

technical field

The utility model relates to the technical field of medical devices, in particular to an indwelling needle that can automatically rebound.

Background technique

Anti-needle indwelling needle is a commonly used infusion supplies. It is also called an intravenous trocar, which usually includes an infusion needle, an outer cannula, a needle seat, and the like. The above-mentioned outer cannula is wrapped on the infusion needle, and during infusion, the outer cannula and the infusion needle are pierced into the blood vessel of the patient together. After stabilization, the infusion needle is withdrawn, leaving only the outer cannula in the patient's blood vessel for infusion.

During the above operation, during the process of withdrawing the infusion needle, due to the uncooperative of the punctured person and the defect of the indwelling needle withdrawal device, the needle withdrawal may not be smooth, which will eventually lead to the failure of the puncture. Secondly, the withdrawn needle may Scratch the medical staff, thereby causing infection to the medical staff, endangering the health of the medical staff, and even causing danger to their lives.

In view of this, it is necessary to propose further solutions.

SUMMARY OF THE INVENTION

The purpose of the invention of the present invention is to provide an indwelling needle that can automatically rebound, so that the needle tube can be accommodated in the anti-needle stick mechanism after being pulled out from the hose, so as to prevent the needle from contacting the medical staff, and prevent the medical staff from contacting the medical staff. to protection.

In order to achieve the above purpose of the invention, the technical scheme adopted by the present invention is: an indwelling needle that can automatically rebound, comprising a hose connection seat, a hose arranged at the front end of the hose connection seat, and a hose arranged in the hose connection seat. An isolation plug, a catheter arranged on the side wall of the hose connection seat, a catheter connection seat arranged at the end of the catheter, a needle tube that is inserted into the hose and extends out of the front end of the hose, and a needle seat that is arranged at the end of the needle tube. The plug divides the inner cavity of the hose connection base into a front cavity and a rear cavity, the conduit is communicated with the front cavity, and also includes a needle stick prevention mechanism, the needle stick prevention mechanism includes a pipe body and is arranged in the pipe body. The V-shaped shrapnel in the body and the handle arranged on the side wall of the tube body;

The two pieces of the V-shaped shrapnel are provided with through holes, the front end of the needle tube is provided with a diamond-shaped pinhole, the width of the diamond-shaped pinhole is larger than the diameter of the needle tube, and the slope of the first half of the diamond-shaped pinhole is smaller than the second half. The diameter of the through hole is smaller than the width of the diamond-shaped needle hole, so that the needle tube cannot be pulled out of the anti-needle stick mechanism after passing through the through hole on the V-shaped shrapnel, and the V-shaped shrapnel provides the needle tube with rebound resilience;

The side wall of the needle seat is provided with an elastic buckle, and the handle is provided with a slot matched with the elastic buckle;

The needle tube is an arc-shaped needle tube, and the included angle between the extension direction of the needle tube and the handle is 90°.

In the above, for the diamond-shaped pinhole structure on the needle tube, the slope of the first half of the needle tube is smaller than the slope of the second half of the needle tube, so as to ensure that the needle tube can smoothly pass through the through hole on the V-shaped shrapnel during installation, and when the needle tube exits the hose, the It can be caught by the V-shaped shrapnel, so that the front end of the needle tube, especially the needle, is accommodated in the tube body of the anti-needle stick mechanism. Therefore, the needle tube has two states in the anti-needle stick mechanism: (1) The needle tube extends out of the anti-needle stick mechanism and Located in the hose, at this time, the needle seat is against the V-shaped shrapnel, the V-shaped shrapnel is in a compressed state, the elastic buckle is stuck in the card groove, and the needle seat is fixed on the anti-needle puncture mechanism; (2) Press the card groove , the needle seat is withdrawn from the anti-needling mechanism under the action of the V-shaped shrapnel, and the elastic buckle is separated from the slot. At this time, the needle tube is stuck by the V-shaped shrapnel under the action of its diamond-shaped needle hole, and cannot be removed from the anti-needling mechanism. The needle is housed in the tube body.

Since the existing needle tubes are all straight needle tubes, when puncturing a patient's blood vessel, the medical staff needs to lift the needle tube upward during the puncturing process to avoid puncturing the blood vessel. The arc-shaped needle tube of the utility model can effectively solve the problem, the medical staff only needs to push the needle tube in, the operation is less difficult, time-saving and labor-saving, and has higher safety.

In the above technical solution, the circle where the outer wall section of the hose is located is inscribed in the circle where the outer wall section of the front end of the hose connection seat is located. That is, the hose extends forward along the edge of the hose connection seat, but the part of the hose body connected with the hose connection seat is still wrapped by the hose connection seat and is not exposed. Since the hose of the existing indwelling needle is set in the middle of the hose connection seat, there is a certain distance between the hose and the edge of the hose connection seat, which makes the hose connected to the seat frame by the hose after it is inserted into the patient Since, in the case of obese patients, the fat layer is thick, which will make the angle between the hose and the hose connection seat too large, making the hose bend, and it is easy to cause problems of poor intravenous infusion and blockage. The hose arrangement position of the present invention effectively solves the above problems.

In the above technical solution, the hose is a FEP pipe.

In the above technical solution, the front end of the hose connection seat is further provided with a sheath.

In the above technical solution, the conduit is further provided with a flow stop clip.

In the above technical solution, a plurality of anti-skid bumps are provided on the surface of the handle.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

1. By adding an anti-needle stick mechanism in the utility model, the needle tube is first passed through the anti-needle stick mechanism and then inserted into the hose, so that the needle tube can be accommodated in the anti-needle stick mechanism after being pulled out from the hose, thereby avoiding the needle and the medical care. Contact with people and protect medical staff.

2. The utility model has the advantages of simple structure and convenient operation, and can realize automatic needle withdrawal.

Description of drawings

FIG. 1 is a schematic diagram of the mechanism of Embodiment 1 of the present invention.

Among them: 1. Hose connection seat; 2. Hose; 3. Isolation plug; 4. Catheter; 5. Catheter connection seat; 6. Needle tube; 7. Needle seat; 8. Tube body; 9. Shrapnel; 10. Handle ; 11, diamond pinhole; 12, sheath; 13, stop clip; 14, elastic buckle.

Detailed ways

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

Example 1:

Referring to Figure 1, an indwelling needle that can automatically rebound includes a hose connection seat 1, a hose 2 made of FPE material arranged at the front end of the hose connection seat, an isolation plug 3 arranged in the hose connection seat, The catheter 4 arranged on the side wall of the hose connection seat, the catheter connection seat 5 arranged at the end of the catheter, the needle tube 6 which is penetrated in the hose and extends out of the front end of the hose, and the needle seat 7 arranged at the end of the needle tube. The isolation plug divides the inner cavity of the hose connection base into a front cavity and a rear cavity, the conduit communicates with the front cavity, and also includes a needle stick prevention mechanism, which includes a pipe body 8 and is provided with The V-shaped elastic piece 9 in the tube body and the handle 10 arranged on the side wall of the tube body;

The two pieces of the V-shaped shrapnel are provided with through holes, the front end of the needle tube is provided with a diamond-shaped pinhole 11, the width of the diamond-shaped pinhole is larger than the diameter of the needle tube, and the slope of the first half of the diamond-shaped pinhole is smaller than the back. With the slope of the half section, the diameter of the through hole is smaller than the width of the diamond-shaped needle hole, so that the needle tube cannot be pulled out of the anti-needle stick mechanism after passing through the through hole on the V-shaped elastic plate, which provides the needle tube rebound resilience;

The side wall of the needle seat is provided with an elastic buckle 14, and the handle is provided with a slot for matching with the elastic buckle;

The needle tube is an arc-shaped needle tube, and the included angle between the extension direction of the needle tube and the handle is 90°.

Since the existing needle tubes are all straight needle tubes, when puncturing a patient's blood vessel, the medical staff needs to lift the needle tube upward during the puncturing process to avoid puncturing the blood vessel. The arc-shaped needle tube of the utility model can effectively solve the problem, the medical staff only needs to push the needle tube in, the operation is less difficult, time-saving and labor-saving, and has higher safety.

In this embodiment, the needle tube exists in two states in the anti-needle stick mechanism: (1) The needle tube extends out of the anti-needle stick mechanism and is located in the hose. At this time, the needle seat is against the V-shaped elastic piece, and the V-shaped elastic piece is in a compressed state , the elastic buckle is stuck in the slot, and the needle seat is fixed on the anti-needle puncture mechanism; (2) Press the slot, the needle seat is withdrawn from the anti-acupuncture mechanism under the action of the V-shaped shrapnel, and the elastic buckle is disengaged At this time, the needle tube is stuck by the V-shaped elastic piece under the action of the diamond-shaped needle hole, and cannot be taken out from the anti-needle stick mechanism, and the needle is accommodated in the tube body. Wherein, the structure of the elastic buckle and the groove is similar to the structure of the existing automatic return ballpoint pen on the market.

The circle where the outer wall section of the hose is located is inscribed with the circle where the outer wall section of the front end of the hose connection seat is located. That is, the hose extends forward along the edge of the hose connection seat, so that after the hose is inserted into the human body, both the tube wall and the edge of the hose connection seat are close to the skin, thereby improving the comfort of the patient.

The front end of the hose connection base is also provided with a sheath 12 .

A flow stop clip 13 is also provided on the conduit.

A plurality of anti-skid bumps are arranged on the surface of the handle.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. An indwelling needle that can automatically rebound, comprising a hose connection seat, a hose arranged at the front end of the hose connection seat, an isolation plug arranged in the hose connection seat, and a A catheter, a catheter connection seat arranged at the end of the catheter, a needle tube that is inserted into the hose and extends out of the front end of the hose, and a needle seat that is arranged at the end of the needle tube, the isolation plug divides the inner cavity of the hose connection seat into a front The cavity body and the rear cavity body, the catheter is communicated with the front cavity body, and it is characterized in that: it also includes a needle stick prevention mechanism, and the needle stick prevention mechanism includes a pipe body, a V-shaped elastic sheet arranged in the pipe body, and a needle stick arranged in the pipe body. the handle on the side wall of the body; The two pieces of the V-shaped shrapnel are provided with through holes, the front end of the needle tube is provided with a diamond-shaped pinhole, the width of the diamond-shaped pinhole is larger than the diameter of the needle tube, and the slope of the first half of the diamond-shaped pinhole is smaller than the second half. The diameter of the through hole is smaller than the width of the diamond-shaped needle hole, so that the needle tube cannot be pulled out of the anti-needle stick mechanism after passing through the through hole on the V-shaped shrapnel, and the V-shaped shrapnel provides the needle tube with rebound resilience; The side wall of the needle seat is provided with an elastic buckle, and the handle is provided with a slot matched with the elastic buckle; The needle tube is an arc-shaped needle tube, and the included angle between the extension direction of the needle tube and the handle is 90°. 2 . The self-rebound indwelling needle according to claim 1 , wherein the circle where the outer wall section of the hose is located is inscribed with the circle where the outer wall section of the front end of the hose connection seat is located. 3 . 3 . The indwelling needle that can automatically rebound according to claim 1 or 2 , wherein the flexible tube is a FEP tube. 4 . 4. The indwelling needle that can automatically rebound according to claim 1, wherein a sheath is further provided at the front end of the hose connection base. 5 . The indwelling needle that can automatically rebound according to claim 1 , wherein the catheter is further provided with a flow stop clip. 6 . 6 . The indwelling needle that can automatically rebound according to claim 1 , wherein a plurality of anti-skid bumps are provided on the surface of the handle. 7 .