Peripheral venous indwelling needle
By designing a transparent puncture needle seat and a peripheral venous indwelling needle in the blood retrieval cavity, the problem of judging the success rate of puncture in the prior art is solved, and the effect of rapid judgment and improvement of work efficiency is achieved.
Patent Information
- Application Number
- CN202420745936.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-04-11
AI Technical Summary
During the puncture process, existing venous indwelling needles need to wait for blood to flow into the indwelling needle seat to determine whether the vein is successfully punctured, resulting in inefficiency.
A peripheral venous indwelling needle is designed. The puncture needle assembly includes a transparent puncture needle seat and a blood return cavity. The tip of the puncture needle is located outside the indwelling catheter. Blood can quickly flow into the blood return cavity through the puncture needle, shortening the judgment time.
By quickly flowing into the blood back into the blood cavity, the time for medical staff to determine whether the indwelling needle is successfully penetrated into the vein is shortened, the work efficiency is improved, and the indwelling catheter can be accurately judged whether the indwelling catheter is penetrated into the vein.
Smart Images
Figure CN222777519U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment, in particular to a peripheral venous indwelling needle. Background Art
[0002] An intravenous catheter is a common medical device that, when used, can relieve patients from the pain caused by repeated punctures.
[0003] At present, in the process of puncturing a patient's vein with an indwelling needle, the medical staff can only judge whether the indwelling needle has punctured the patient's vein when they observe that the blood in the patient's vein flows into the indwelling needle seat through the gap between the outer wall of the puncture needle and the inner wall of the indwelling catheter. However, since the indwelling catheter of the existing intravenous indwelling needle is a hose wrapped around the puncture needle, the gap between the outer wall of the puncture needle and the inner wall of the indwelling catheter is small. In this way, the time for the blood in the patient's vein to flow into the indwelling needle seat will be much longer than the time for the medical staff to puncture the indwelling needle into the patient's vein. That is to say, after the medical staff punctures the indwelling needle into the patient's vein, it is necessary to wait for a period of time to correctly judge whether the puncture is successful. This will affect the work efficiency of the medical staff during use. Therefore, there are still shortcomings and deficiencies in the existing technology. Utility Model Content
[0004] The purpose of the utility model is to provide a peripheral venous indwelling needle to solve the problems raised in the above background technology.
[0005] In order to solve the above problems, the technical solution adopted by the utility model is:
[0006] The puncture needle assembly of claim 1, wherein the puncture needle seat is a tubular structure with openings at both ends, a sealing plug is installed in one end of the puncture needle seat, and the other end of the puncture needle seat is fixedly connected to a puncture catheter arranged coaxially with the puncture needle seat. The puncture needle assembly comprises a puncture needle seat, the puncture needle seat is located outside the end of the puncture needle seat away from the puncture catheter, the puncture needle seat is a transparent tubular structure, and the puncture needle seat is arranged parallel to the puncture needle seat, the end of the puncture needle seat away from the puncture needle seat is opened and a detachable sealing cap is installed, the other end of the puncture needle seat is closed and a blood return cavity is formed between the sealing cap, and the closed end of the puncture needle seat is fixedly connected to a puncture needle connected to the blood return cavity, the puncture needle and the puncture needle seat are arranged coaxially, and the end of the puncture needle away from the puncture needle seat is a sharp end, the sharp end of the puncture needle sequentially penetrates the sealing plug and the puncture catheter and is located outside the puncture catheter, and the puncture needle is slidably connected to the sealing plug and the puncture catheter.
[0007] Furthermore, a push plate is fixedly connected to the outer wall of the indwelling needle seat, and the push plate is located at one end of the indwelling needle seat away from the indwelling catheter.
[0008] Furthermore, one side of the indwelling needle seat is fixedly connected to an infusion hose, one end of the infusion hose close to the indwelling needle seat is located on the side of the sealing plug close to the indwelling catheter, and the other end of the infusion hose is fixedly connected to an infusion connector.
[0009] Furthermore, one end of the infusion hose close to the indwelling needle seat is fixedly connected to a connecting tube, and the end of the connecting tube away from the infusion hose is located on the side of the sealing plug close to the indwelling catheter, and the connecting tube is vertically fixedly connected to the indwelling needle seat to form a T-shaped structure.
[0010] Furthermore, a liquid-stop clamp is provided on the infusion hose.
[0011] Furthermore, the length of the infusion hose is 20-30 cm.
[0012] By adopting the above technical solution, the beneficial effects of the utility model are:
[0013] The usage of the utility model is the same as that of the prior art. When the medical staff inserts the indwelling needle into the patient's vein, since the tip of the puncture needle is located outside the indwelling catheter, when the tip of the puncture needle is inserted into the patient's vein, the blood in the patient's vein can quickly flow into the blood return cavity of the puncture needle seat through the puncture needle, thereby shortening the time for the medical staff to judge whether the indwelling needle has been inserted into the patient's vein, so as to improve the work efficiency of the medical staff; then after the indwelling catheter is inserted into the patient's vein, when the medical staff observes that the blood in the blood return cavity continues to increase, it is also possible to accurately judge whether the indwelling catheter has been inserted into the patient's vein to ensure the success rate of puncture. At this time, the blood in the patient's vein can also flow into the indwelling needle seat through the gap between the outer wall of the puncture needle and the inner wall of the indwelling catheter, so that the medical staff can judge again whether the indwelling needle has been inserted into the patient's vein according to their own needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 for Figure 1 The schematic diagram of the structure of the middle part of the device;
[0016] Figure 3 for Figure 2 Schematic diagram of the structure in the split state.
[0017] Figure numerals: 1. indwelling catheter; 2. indwelling needle seat; 3. sealing plug; 4. puncture needle seat; 41. blood return chamber; 42. closing cap; 5. puncture needle; 6. push plate; 7. infusion hose; 8. infusion connector; 9. connecting tube; 10. stop clamp; 11. heparin cap. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the implementation mode of the present invention is further described in detail below with reference to the accompanying drawings.
[0019] like Figures 1 to 3 As shown, the utility model provides a peripheral venous indwelling needle, including a puncture needle assembly and an indwelling needle seat 2, the indwelling needle seat 2 is a tubular structure with two ends open, a sealing plug 3 is installed in one end of the indwelling needle seat 2, and the other end of the indwelling needle seat 2 is fixedly connected to an indwelling catheter 1 arranged coaxially with the indwelling needle seat 2. Specifically, the indwelling needle seat 2, the sealing plug 3 and the indwelling catheter 1 are all prior arts, that is, the indwelling catheter 1 is a hose; and the puncture needle assembly includes a puncture needle seat 4, the puncture needle seat 4 is located outside the end of the indwelling needle seat 2 away from the indwelling catheter 1, the puncture needle seat 4 is a transparent tubular structure, and the puncture needle seat 4 The puncture needle seat 4 is arranged parallel to the indwelling needle seat 2, and the end of the puncture needle seat 4 away from the indwelling needle seat 2 is open and installed with a detachable closing cap 42, which is similar to an infusion plug and is plugged into the puncture needle seat 4; the other end of the puncture needle seat 4 is closed and forms a blood return cavity 41 between the closing cap 42, and the closed end of the puncture needle seat 4 is fixedly connected to a puncture needle 5 connected to the blood return cavity 41, the puncture needle 5 is a hollow stainless steel needle with two ends opened, and the volume in the blood return cavity 41 is much larger than the volume in the puncture needle 5; the puncture needle 5 is coaxially arranged with the puncture needle seat 4, and the end of the puncture needle 5 away from the puncture needle seat 4 The tip of the puncture needle 5 penetrates the sealing plug 3 and the indwelling catheter 1 in sequence and is located outside the indwelling catheter 1. The puncture needle 5 is slidably connected to the sealing plug 3 and the indwelling catheter 1, that is, the puncture needle 5 can be pulled outward. Specifically, the use method of the utility model is the same as that of the prior art. When the medical staff punctures the indwelling needle into the patient's venous blood vessel, the tip of the puncture needle 5 is located outside the indwelling catheter 1. When the tip of the puncture needle 5 is inserted into the patient's venous blood vessel, the blood in the patient's venous blood vessel can quickly flow into the blood return cavity 41 of the puncture needle seat 4 through the puncture needle 5, thereby shortening the medical staff's time. The time for medical staff to judge whether the indwelling needle has been inserted into the patient's vein can improve the work efficiency of medical staff; then after the indwelling catheter 1 is inserted into the patient's vein, when the medical staff observes that the blood in the blood return chamber 41 continues to increase, it can also accurately judge whether the indwelling catheter 1 has been inserted into the patient's vein to ensure the success rate of puncture. At this time, the blood in the patient's vein can also flow into the indwelling needle seat 2 through the gap between the outer wall of the puncture needle 5 and the inner wall of the indwelling catheter 1, so that the medical staff can judge again whether the indwelling needle has been inserted into the patient's vein according to their own needs.
[0020] After the indwelling needle is successfully punctured, the puncture needle 5 is first pulled out, and then the position of the indwelling needle seat 2 is fixed by using a patch. At this time, the patient can be injected with a syringe. Specifically, when in use, after the needle tip of the syringe needle passes through the sealing plug 3, the patient can be injected with a syringe barrel.
[0021] To ensure the success rate of intravenous needle puncture, Figures 1 to 3 As shown, a push plate 6 is fixedly connected to the outer wall of the indwelling needle seat 2, and the push plate 6 is located at the end of the indwelling needle seat 2 away from the indwelling catheter 1. Specifically, during puncture, the medical staff can fix the patient's limb with one hand, pinch the puncture needle seat 4 with the thumb and middle finger of the other hand, and bend the index finger and place it at the position of the push plate 6, and then puncture the indwelling needle at an angle of 15-30 degrees to the patient's skin. After seeing the blood return in the blood return cavity 41, the indwelling needle is laid flat and the needle is inserted 2-3mm, and then the index finger can push the push plate 6 along the needle insertion direction to make the indwelling needle sleeve 1 pierce the patient's venous blood vessel. That is, when the utility model is in use, the medical staff can complete the puncture operation of the indwelling needle with one hand, thereby ensuring the success rate of intravenous indwelling needle puncture.
[0022] Further, such as Figure 1 As shown, one side of the indwelling needle seat 2 is fixedly connected to an infusion hose 7, one end of the infusion hose 7 close to the indwelling needle seat 2 is located on the side of the sealing plug 3 close to the indwelling catheter 1, and the other end of the infusion hose 7 is fixedly connected to an infusion connector 8. Specifically, the infusion connector 8 is a Y-type infusion connector in the prior art. When in use, when it is necessary to use an infusion set to infuse the patient, the heparin cap 11 on the infusion connector 8 can be removed, and then after the infusion connector 8 is connected to the connector on the infusion set, the infusion set and the infusion bottle can be used to infuse the patient.
[0023] The specific method of fixedly connecting the infusion hose 7 and the indwelling needle seat 2 is as follows: Figure 1 As shown, one end of the infusion hose 7 close to the indwelling needle seat 2 is fixedly connected with a connecting tube 9, and the end of the connecting tube 9 away from the infusion hose 7 is located on the side of the sealing plug 3 close to the indwelling catheter 1, and the connecting tube 9 is vertically fixedly connected to the indwelling needle seat 2 to form a T-shaped structure. In this way, when fixing the indwelling needle seat 2, the indwelling needle seat 2 and the connecting tube 9 can be fixed by using a patch, so that the indwelling needle can be firmly fixed to avoid the occurrence of tube detachment.
[0024] Further, such as Figure 1 As shown, a liquid-stopping clamp 10 is provided on the infusion hose 7 , and the liquid-stopping clamp 10 is used to open and close the infusion channel of the infusion hose 7 .
[0025] In the prior art, when performing surgery on a patient, due to the surgeon's standing position requirements and to prevent the patient's upper limbs from being abducted more than 90 degrees, the patient's upper limbs are usually placed on both sides of the body and wrapped with a sheet during surgery. However, since the infusion hose of the existing intravenous indwelling needle is usually 10 cm long, it is sometimes necessary to wrap the infusion connector 8 and the stop clamp 10 together with the patient's upper limb when performing infusion using the upper limb. As a result, during a long operation, the infusion connector 8 and the stop clamp 10 may sometimes cause the patient's upper limb to be crushed. In addition, when the length of the infusion hose 7 is short, there is sometimes a risk that the infusion set will fall out of the infusion bottle due to the patient's activities. Therefore, the utility model sets the length of the infusion hose 7 to 20-30cm, that is, the utility model increases the length of the infusion hose 7. When the upper limbs are used for infusion during surgery on the patient, there is no need to wrap the infusion connector 8 and the liquid stop clamp 10 together with the patient's upper limbs, thereby avoiding crushing of the patient's upper limbs; secondly, by increasing the length of the infusion hose 7, the risk of the infusion set falling out of the infusion bottle can also be reduced.
[0026] The specific usage of the utility model is as follows: after unpacking the packaging bag, the infusion connector 8 is first connected to the infusion set to exhaust the indwelling needle, and before puncturing, a tourniquet is tied 10 cm above the puncture point, and the puncture site is disinfected; when puncturing, the medical staff fixes the patient's limb with one hand, pinches the puncture needle seat 4 with the thumb and middle finger of the other hand, and bends the index finger to the position of the push plate 6, and then punctures the indwelling needle at an angle of 15-30 degrees to the patient's skin. After seeing the blood return in the blood return cavity 41, the indwelling needle is laid flat and the needle is inserted 2-3 mm, and then the index finger can be moved along the needle insertion direction. Push the push plate 6 to allow the indwelling needle cannula 1 to penetrate into the patient's venous blood vessel. Then, when the blood in the blood return chamber 41 continues to increase, it indicates that the puncture and catheterization is successful. Then pull out the puncture needle 5, and use a patch to fix the positions of the indwelling needle seat 2 and the connecting tube 9. At this time, it can be determined again whether the puncture is successful. The specific operations are as follows: the first step is to open the stop liquid clamp 10 and observe whether the dripping is smooth. The second step is to close the stop liquid clamp 10 if the dripping is smooth, and continue to squeeze the end of the infusion hose 7 close to the connecting tube 9, then release it, and observe whether there is blood return. If there is blood return, it indicates that the puncture is successful.
[0027] In general, the utility model can perform indwelling needle puncture operations with one hand to ensure the success rate of puncture and catheterization, and it is not easy to get the tube off, which can prevent blood contamination; secondly, by increasing the length of the infusion hose 7 to extend the infusion line, when wrapping the arm, it can avoid crushing injuries to the patient's upper limbs, and can also reduce the risk of the infusion set coming off the infusion bottle.
[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A peripheral venous indwelling needle, characterized in that: The puncture needle assembly comprises a puncture needle seat, the puncture needle seat is a tubular structure with openings at both ends, a sealing plug is installed in one end of the puncture needle seat, and the other end of the puncture needle seat is fixedly connected with a puncture catheter arranged coaxially with the puncture needle seat. The puncture needle assembly comprises a puncture needle seat, the puncture needle seat is located outside the end of the puncture needle seat away from the puncture catheter, the puncture needle seat is a transparent tubular structure, and the puncture needle seat is arranged parallel to the puncture needle seat, the end of the puncture needle seat away from the puncture needle seat is opened and a detachable closing cap is installed, the other end of the puncture needle seat is closed and a blood return cavity is formed between the closing cap, and the closed end of the puncture needle seat is fixedly connected with a puncture needle connected with the blood return cavity, the puncture needle is arranged coaxially with the puncture needle seat, and the end of the puncture needle away from the puncture needle seat is a sharp end, the sharp end of the puncture needle sequentially penetrates the sealing plug and the puncture catheter and is located outside the puncture catheter, and the puncture needle is slidably connected to the sealing plug and the puncture catheter.
2. A peripheral venous indwelling needle according to claim 1, characterized in that: A push plate is fixedly connected to the outer wall of the indwelling needle seat, and the push plate is located at one end of the indwelling needle seat away from the indwelling catheter.
3. A peripheral venous indwelling needle according to claim 1, characterized in that: One side of the indwelling needle seat is fixedly connected with an infusion hose, one end of the infusion hose close to the indwelling needle seat is located on the side of the sealing plug close to the indwelling catheter, and the other end of the infusion hose is fixedly connected with an infusion connector.
4. A peripheral venous indwelling needle according to claim 3, characterized in that: One end of the infusion hose close to the indwelling needle seat is fixedly connected with a connecting tube, and the end of the connecting tube away from the infusion hose is located on the side of the sealing plug close to the indwelling catheter, and the connecting tube is vertically fixedly connected to the indwelling needle seat to form a T-shaped structure.
5. A peripheral venous indwelling needle according to claim 3, characterized in that: The infusion hose is provided with a liquid-stopping clamp.
6. A peripheral venous indwelling needle according to any one of claims 3 to 5, characterized in that: The length of the infusion hose is 20-30 cm.