CN219613979U - Safe and reliable's internal fistula pjncture needle - Google Patents

Abstract

The utility model provides a safe and reliable internal fistula puncture needle, which comprises a retention needle main body and a puncture needle detachably inserted in the retention needle main body, wherein the retention needle main body comprises a sleeve and a turnover cavity, the turnover cavity is in sealing connection and communication with the sleeve, a sealing plug is embedded in one end of the turnover cavity far away from the sleeve in a sealing way, the puncture needle penetrates through the sealing plug and finally penetrates out of the sleeve, a switching tube is further arranged on the side edge of the turnover cavity and is in sealing communication with the turnover cavity, a hemostatic clamp is sleeved on the switching tube, flow increasing holes are formed in the side wall of one end of the sleeve far away from the turnover cavity, and the flow increasing holes are not less than two and are arranged on two sides of the sleeve in a staggered way. The utility model can improve the safety of patients in the dialysis process, protect erythrocytes, effectively avoid the generation of allergic symptoms and improve the quality of hemodialysis.

Description

Safe and reliable's internal fistula pjncture needle

Technical Field

The utility model relates to the technical field of puncture needles, in particular to a safe and reliable internal fistula puncture needle.

Background

Hemodialysis refers to the use of a blood purification device (i.e., artificial kidney) to remove various toxins and excess water from the blood of uremic patients, and to supplement various beneficial substances to achieve the purpose of purifying the blood. Hemodialysis is one of the common means for treating uremia, and can effectively maintain the life of uremic patients. The blood vessel access of the uremic patient must be established before the uremic patient receives hemodialysis treatment, and the arteriovenous fistula solves the long-term dialysis blood vessel access problem of the uremic patient, and is the blood vessel access which is the safest, most economical and has the longest maintenance time at present.

The internal fistula puncture needle is an indispensable medical instrument in hemodialysis treatment and mainly comprises a stainless steel puncture needle tube, a needle wing, a tube body, a catheter clamp, a joint and the like. In hemodialysis treatment, an extracorporeal circulation path of blood is formed by puncturing an arteriovenous fistula of a patient and connecting the extracorporeal circulation path with a dialyzer.

However, the inner fistula needles widely used clinically at present are generally thicker in needle heads and very sharp in needle tips; whereas the time the needle remains in the body when the patient is subjected to dialysis is typically 4 hours, there may be the following risks:

1. when the conscious patient uses the internal fistula needle, the activities such as body position replacement and the like are inevitably carried out, which can cause the sharp needle to damage vascular endothelium to different degrees and cause the occurrence of corresponding complications;

2. during or during a portion of a patient's dialysis treatment, various degrees of limb twitching and even disturbance of consciousness may occur, even somewhat unpredictably, in which case the sharp inner fistula needle may puncture the blood vessel, leading to more serious consequences and even threatening the patient's life;

3. in order to maintain the operation of blood in a dialysis machine, it is necessary to aspirate the blood in the blood vessel, where the more fragile erythrocytes may undergo extensive cell damage or even rupture when passing through a sharp needle at high speed, resulting in a loss of the quality and quantity of erythrocytes in the blood; moreover, patients who need dialysis treatment often have poor overall physical condition, most of them are in an anemic state, the loss of red blood cells is dangerous to them, and serious patients can endanger the lives of the patients;

4. some patients have anaphylactic reaction to the stainless steel needle tube, the stainless steel needle tube is directly utilized for dialysis, and the anaphylactic reaction of the patients causes pain in the dialysis process and even can not complete the dialysis work.

Disclosure of Invention

The utility model provides a safe and reliable internal fistula puncture needle aiming at the problems.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a safe and reliable's internal fistula pjncture needle, includes detains needle main part and detachably alternates the pjncture needle in it, detain the needle main part and include sleeve pipe and turnover chamber, the turnover chamber with sleeve pipe sealing connection and intercommunication, the turnover chamber is kept away from the sheathed tube one end is internal to be sealed to inlay and is equipped with the sealing plug, the pjncture needle passes the sealing plug and finally wears out the sleeve pipe, the side of turnover chamber still is provided with the transfer pipe, the transfer pipe with the sealed UNICOM of turnover chamber, the cover is equipped with hemostatic clamp on the transfer pipe, the sleeve pipe is kept away from the boost hole has been seted up on the lateral wall of the one end of turnover chamber, the boost hole is not less than two and crisscross the setting is in sheathed tube both sides.

Preferably, the end of the sleeve away from the turnover cavity is rounded.

Preferably, one end of the sealing plug positioned in the turnover cavity is in an elliptic arc shape.

Preferably, the sealing plug is a high-density silica gel plug.

Preferably, the turnover cavity and the sleeve are both low-sensitivity hoses.

Preferably, the two sides of the turnover cavity are symmetrically provided with butterfly wings, and the outer surfaces of the two sides of the butterfly wings are provided with anti-slip stripes.

Preferably, the butterfly wing is a soft deformable sheet structure.

Preferably, the tail end of the puncture needle is fixedly provided with a long plate-shaped handle.

Compared with the prior art, the utility model has the beneficial effects that: the low-sensitivity hose of the indwelling needle main body is used for replacing a stainless steel needle, so that allergy of a patient can be effectively avoided; on the other hand, the injury to the blood vessel and internal fistula of the patient can be effectively reduced; and avoid the medical accident of penetrating blood vessel when the patient moves the arm without consciousness; in addition, a large amount of blood can be gushed out after the arterial vessel puncture is successful, and the high-density sealing plug can be used for automatically closing to block the blood flow after the puncture needle is pulled out, so that the blood splashing is avoided, and the dialysis environment is clean and fresh; during hemodialysis, only the orifice at the head end of the sleeve is utilized to flow in blood, the blood conveying speed is low, so that the dialysis time is long, and the flow increasing holes are additionally formed in the side edge of the sleeve, so that the blood outflow speed can be effectively improved, and the hemodialysis quality is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of a safe and reliable internal fistula puncture needle of the utility model.

Detailed Description

For a further understanding of the objects, construction, features, and functions of the utility model, reference should be made to the following detailed description of the preferred embodiments.

Referring to fig. 1 in combination, a safe and reliable internal fistula puncture needle 2 according to an embodiment of the utility model comprises a retention needle body 1 and a puncture needle 2 detachably inserted therein, wherein the retention needle body 1 comprises a sleeve 11 and a turnover cavity 12, the turnover cavity 12 is in sealing connection and communication with the sleeve 11, a sealing plug 13 is embedded in one end of the turnover cavity 12 far away from the sleeve 11 in a sealing manner, the puncture needle 2 penetrates through the sealing plug 13 and finally penetrates out of the sleeve 11, a transfer tube 14 is further arranged on the side edge of the turnover cavity 12, the transfer tube 14 is in sealing communication with the turnover cavity 12, a hemostatic clip 15 is sleeved on the transfer tube 14, and a flow increasing hole 16 is formed in the side wall of one end of the sleeve 11 far away from the turnover cavity 12, wherein the flow increasing holes 16 are not less than two and are arranged on two sides of the sleeve 11 in a staggered manner. Preferably, both the transfer chamber 12 and the sleeve 11 are low-sensitive hoses.

In an embodiment, the indwelling needle main body 1 is matched with the puncture needle 2, the puncture needle 2 is withdrawn after the puncture is completed, the sleeve 11 of the indwelling needle main body 1 is reserved in a blood vessel of a patient, the steel tube in the prior art is replaced, the blood vessel and internal fistula of the patient can be effectively protected under the condition that the patient moves an arm independently or not independently, the damage to the inner skin of the blood vessel of the patient is avoided, even the blood vessel is punctured, the safety is improved, in addition, a hyposensitive hose can reduce the sensitization rate, and the appearance of sharp corners can be avoided, so that the damage to red blood cells is avoided, and the quality of the red blood cells in the hemodialysis process is effectively protected. And the sealing plug 13 can automatically flow and close after the puncture needle 2 is pulled out, so that the pollution to the environment caused by splash of arterial blood when the puncture is completed. Meanwhile, the arrangement of the flow increasing holes 16 can effectively improve the blood outflow speed of the arterial blood vessel, and keep enough blood in the dialysis machine, so that the dialysis quality is improved.

Preferably, the end of the cannula 11 remote from the transfer lumen 12 is rounded to avoid rupture of red blood cells as blood enters the cannula 11.

Preferably, one end of the sealing plug 13 located in the turnover cavity 12 is in an elliptic arc shape, and when blood flows into the turnover cavity 12, the sealing plug 13 is further extruded from the side face of the elliptic sealing plug 13 by utilizing the hydraulic pressure of blood convergence, so that a puncture hole extruded by the puncture needle 2 of the sealing plug 13 is more rapidly closed when the puncture needle 2 is pulled out, and the sealing effect is further ensured.

Preferably, the sealing plug 13 is a high-density silica gel plug, and the sealing plug 13 rapidly expands to fill the puncture hole after the puncture needle 2 is pulled out, so that the rapid closing seal is realized.

Preferably, the two sides of the turnover cavity 12 are symmetrically provided with butterfly wings 17, and the outer surfaces of the two sides of the butterfly wings 17 are provided with anti-slip stripes 18. Further, the wings 17 are of a soft and deformable sheet-like structure.

The arrangement of the butterfly wing 17 is convenient for pressing the butterfly wing 17 to pull out the puncture needle 2 after the puncture is completed, and meanwhile, the butterfly wing 17 can be bent after the puncture needle 2 is pulled out, so that the butterfly wing 17 is more attached to the skin of a patient, and the indwelling needle body 1 is more convenient to be entangled and fixed by the adhesive tape. The turnover cavity 12 made of the low-sensitivity hose is matched, so that the indwelling needle body 1 can be properly deformed during fixing, and pressure sores can be avoided during hemodialysis for nearly four hours.

Preferably, the tail end of the puncture needle 2 is fixedly provided with a long plate-shaped handle 21, so that the puncture needle 2 is more convenient to hold and pull out.

When the hemostatic clamp is used, the hemostatic clamp 15 is closed firstly, the head end of the puncture needle 2 is ensured to penetrate out of the sleeve 11, then the puncture point of an arterial blood vessel is found through the ultrasonic probe and is punctured, the sleeve 11 and the puncture needle 2 are punctured into the blood vessel of a patient, then the butterfly wing 17 is held by one hand, the long plate-shaped handle 21 is held by the other hand to pull out the puncture needle 2, then the turnover cavity 12 and the butterfly wing 17 are fixedly glued around the puncture point by using the adhesive tape, and then the hemostatic clamp 15 is opened to perform subsequent dialysis work.

Therefore, the safe and reliable internal fistula puncture needle disclosed by the utility model has the advantages that the low-sensitivity hose of the indwelling needle main body is used for replacing the stainless steel needle, so that on one hand, allergy of a patient can be effectively avoided; on the other hand, the injury to the blood vessel and internal fistula of the patient can be effectively reduced; and avoid the medical accident of penetrating blood vessel when the patient moves the arm without consciousness; in addition, a large amount of blood can be gushed out after the arterial vessel puncture is successful, and the high-density sealing plug can be used for automatically closing to block the blood flow after the puncture needle is pulled out, so that the blood splashing is avoided, and the dialysis environment is clean and fresh; when in hemodialysis, only the orifice at the head end of the sleeve is used for flowing in blood, the blood conveying speed is low, so that the dialysis time is long, and the flow increasing holes are additionally arranged at the side edge of the sleeve, so that the blood flowing-out speed can be effectively improved, and the hemodialysis quality is improved.

The utility model has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the utility model. It should be noted that the disclosed embodiments do not limit the scope of the utility model. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (8)

1. A safe and reliable's internal fistula pjncture needle, its characterized in that: including keeping somewhere needle main part and detachably interlude the pjncture needle in it, keep somewhere the needle main part and include sleeve pipe and turnover chamber, the turnover chamber with sleeve pipe sealing connection and intercommunication, the turnover chamber is kept away from the one end internal seal of sleeve pipe is inlayed and is equipped with the sealing plug, the pjncture needle passes the sealing plug and finally wears out the sleeve pipe, the side of turnover chamber still is provided with the transfer pipe, the transfer pipe with the sealed UNICOM of turnover chamber, the cover is equipped with hemostatic clamp on the transfer pipe, the sleeve pipe is kept away from have been seted up on the lateral wall of the one end of turnover chamber and have been increased the discharge orifice, it is not less than two and crisscross the setting of discharge orifice is in the sheathed tube both sides.

2. The safe and reliable internal fistula puncture needle of claim 1, wherein: the sleeve pipe is kept away from the one end of turnover chamber is the chamfer.

3. The safe and reliable internal fistula puncture needle of claim 1, wherein: one end of the sealing plug positioned in the turnover cavity is in an elliptic arc shape.

4. The safe and reliable internal fistula puncture needle of claim 3, wherein: the sealing plug is a high-density silica gel plug.

5. The safe and reliable internal fistula puncture needle of claim 1, wherein: the turnover cavity and the sleeve are all low-sensitivity hoses.

6. The safe and reliable internal fistula puncture needle of claim 1, wherein: the two sides of the turnover cavity are symmetrically provided with butterfly wings, and the outer surfaces of the two sides of the butterfly wings are provided with anti-slip stripes.

7. The safe and reliable internal fistula puncture needle of claim 6, wherein: the butterfly wing is of a soft and deformable sheet structure.

8. The safe and reliable internal fistula puncture needle of claim 1, wherein: the tail end of the puncture needle is fixedly provided with a long plate-shaped handle.