Arteriovenous puncture outfit

Abstract

The utility model discloses an arteriovenous puncture outfit, and relates to the technical field of arteriovenous puncture. The device comprises a conveying pipe, one end of the conveying pipe is provided with a needle head, the needle head is provided with a needle wing piece, the conveying pipe is movably sleeved with a protective sleeve, the surface of the protective sleeve is symmetrically provided with a guide groove and an expansion groove, one end of the expansion groove is communicated with the guide groove, and the surface of the protective sleeve is symmetrically provided with elastic clamping plates. And the elastic clamping plates are correspondingly arranged at the lower parts of the expansion grooves, so that elastic cavities are formed between the elastic clamping plates and the expansion grooves. The puncture risk caused by misoperation when a needle sleeve is sleeved again is greatly reduced, meanwhile, the possibility of cross infection caused by pathogens carried by the puncture needle is reduced, the problem that the used puncture needle is difficult to store is well solved, other personnel are prevented from being punctured, and the safety of medical personnel and surrounding personnel is comprehensively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of arteriovenous puncture, specifically, especially arteriovenous puncture device. BACKGROUND

[0002] Arteriovenous puncture device is a kind of instrument for blood vessel puncture in medical process, and is an important component part in blood transfusion, dialysis and extracorporeal circulation instrument, with the characteristics of high safety, simple operation and wide applicability, and different types of arteriovenous puncture device can be selected according to different clinical needs.

[0003] In medical practice, arteriovenous puncture is very common operation, however, the traditional puncture needle has many safety hazards, after puncture is completed and is pulled out, medical staff manually re-suits puncture needle with needle cover, but clinical work is busy, medical staff is highly nervous, and finger is easily pricked by puncture needle due to inattention or hand action failure when operating, and if puncture needle contacts blood, body fluid and the like with pathogen of patient in use process, once medical staff is pricked, cross infection is extremely likely to be caused, in addition, there is lack of effective design for storage of used puncture needle, greatly increasing the risk of pricking other personnel.

[0004] For the problems in the related art, no effective solution has been proposed so far. CONTENT OF THE UTILITY MODEL

[0005] To solve the above technical problems, the utility model is arteriovenous puncture device, including conveying pipe, the one end of conveying pipe is installed with needle, needle is installed with needle wing spare on needle, needle wing spare is overall axial symmetry, conveying pipe is movably equipped with protective sleeve on, the surface of protective sleeve is symmetrically opened with guide slot, expansion groove, the one end of expansion groove is communicated with guide slot, the surface of protective sleeve is symmetrically provided with elastic clamping plate, and elastic clamping plate is correspondingly arranged in the lower part of expansion groove, so that an elastic cavity is formed between elastic clamping plate and expansion groove, so that elastic clamping plate can be elastically deformed through elastic cavity, needle wing spare can slide to its inside through the open end of guide slot, and when needle wing spare drives needle to slide to the other end of guide slot, needle is clamped by elastic clamping plate, so that needle is stored in protective sleeve.

[0006] The open end of guide slot is provided with wide opening, and has cambered surface.

[0007] The end of guide slot not being open is provided with upward inclination angle, and elastic clamping plate is located at the position where guide slot starts to have inclination angle.

[0008] The initial state of needle wing spare is horizontal form, and when sliding to the end of guide slot with upward inclination angle, needle wing spare is controlled to V-shaped folding form by inclination angle.

[0009] The needle wing piece comprises a mounting tube, the mounting tube is sleeved on the needle, symmetrically mounted with clamping plates on the outer peripheral surface of the mounting tube, the clamping plates are made of soft rubber, one end of the clamping plates is provided with a wing plate, and the upper surface of the clamping plate is lower than the upper surface of the wing plate.

[0010] The lower end of the elastic clamping plate is lower than the top side of the guide groove.

[0011] The handle is provided with anti-skid convex points on the surface.

[0012] The needle is movably sleeved with a needle sleeve.

[0013] The inner surface of the protective sleeve is provided with anti-skid pieces away from the needle, and the inner walls of the anti-skid pieces are tightly attached to the conveying pipe.

[0014] The utility model has the following beneficial effects:

[0015] The utility model discloses a safe and reliable puncture needle storage mode is provided for medical staff, and medical staff only need to push the protective sleeve through the handle, and the cooperation of the clamping plate and the guide groove and the elastic clamping plate in the moving process of the protective sleeve, and the puncture needle can be safely stored in the protective sleeve without directly contacting the needle with the hand, so that the risk of being pricked by mistake when the needle sleeve is re-sleeved is greatly reduced, the possibility of cross infection caused by the puncture needle carrying pathogenic microorganisms is reduced, the storage problem of the puncture needle after use is solved, other personnel are avoided from being pricked, and the safety of medical staff and surrounding personnel is comprehensively ensured.

[0016] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages mentioned above. DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0018] Figure 2 It is a protective sleeve structure schematic view of the utility model; Figure 2 It is a partial enlarged structure schematic view of A in the utility model;

[0019] Figure 3 It is a needle wing piece structure schematic view of the utility model;

[0020] Figure 4 It is a protective sleeve structure schematic view of the utility model.

[0021] The drawing mark explanation: 1, conveying pipe; 2, needle; 3, needle wing piece; 4, protective sleeve; 5, guide groove; 6, expansion groove; 7, elastic clamping plate; 8, mounting tube; 9, clamping plate; 10, wing plate; 11, handle; 12, needle sleeve; 13, anti-skid piece. CONCRETE IMPLEMENTATION

[0022] For the purpose, technical scheme and advantages of the embodiments of the present application, the following will combine the drawings of the embodiments of the present application to make a detailed description. Figures 1-4 The technical scheme of the embodiments of the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0023] Please refer to Figure 1 , Figure 2 As shown in the figure:

[0024] The present embodiment provides a dynamic arteriovenous puncture device, including a delivery tube 1, one end of the delivery tube 1 is provided with a needle 2, the needle 2 is provided with a needle wing piece 3, the needle wing piece 3 is generally axially symmetric, the delivery tube 1 is movably sleeved with a protective sleeve 4, the protective sleeve 4 is symmetrically provided with a guide groove 5 and an expansion groove 6 on the surface, one end of the expansion groove 6 is communicated with the guide groove 5, the protective sleeve 4 is symmetrically provided with an elastic clamping plate 7 on the surface, the elastic clamping plate 7 is correspondingly arranged at the lower part of the expansion groove 6, so that an elastic cavity is formed between the elastic clamping plate 7 and the expansion groove 6, so that the elastic clamping plate 7 can be elastically deformed through the elastic cavity, the needle wing piece 3 can be slid to the inside through the opening end of the guide groove 5, when the needle wing piece 3 drives the needle 2 to slide to the other end of the guide groove 5, the needle wing piece 3 will be clamped by the elastic clamping plate 7, so as to store the needle 2 in the protective sleeve 4.

[0025] When the needle 2 is inserted into the blood vessel of the patient during the arteriovenous puncture, the protective sleeve 4 is movably sleeved on the delivery tube 1 and is located away from the needle 2, which does not interfere with the puncture process. When the puncture operation is completed and the needle 2 needs to be stored and protected, the medical staff pushes the protective sleeve 4 along the delivery tube 1 towards the needle 2. At this time, the needle wing member 3 is opposite the opening end of the guide groove 5, and the medical staff continues to push the protective sleeve 4. The needle wing member 3 starts to slide into the guide groove 5 through the opening end of the guide groove 5. With the advancement of the protective sleeve 4, the needle wing member 3 drives the needle 2 to move along the guide groove 5. When the needle wing member 3 drives the needle 2 to slide to the other end of the guide groove 5, the needle wing member 3 will squeeze the elastic clamping plate 7 during the movement process, causing the elastic clamping plate 7 to elastically deform. Due to the elastic cavity between the elastic clamping plate 7 and the expansion groove 6, the elastic clamping plate 7 can deform and expand in the direction of the expansion groove 6. When the needle wing member 3 passes through the elastic clamping plate 7, the elastic clamping plate 7 returns to its original state and performs clamping and fixing on the needle wing member 3, fixing it in the guide groove 5. At this time, the needle 2 is completely stored in the protective sleeve 4. Therefore, through this design, the medical staff can safely store the needle 2 in the protective sleeve 4 without directly touching the needle 2, effectively avoiding the risk of injury caused by operation errors during the needle sleeve 12 replacement process. Also, it reduces the possibility of cross infection caused by the puncture needle carrying pathogens, and properly solves the problem of storing the puncture needle after use, reducing the risk of injuring other personnel.

[0026] As shown in Figure 1 , Figure 2 , the opening end of the guide groove 5 is wider and has an arc surface, thereby providing a wide and smooth entrance for the needle wing member 3 through the wider opening and the arc surface design. When the medical staff moves the protective sleeve 4 towards the needle 2, even if there is a certain deviation in the centering accuracy of the needle wing member 3 and the opening of the guide groove 5, the wider opening can accommodate this deviation, making it easier for the needle wing member 3 to enter the guide groove 5. The arc surface further plays a guiding role, and its smooth surface can guide the needle wing member 3 to smoothly slide into the guide groove 5, avoiding the situation that the needle wing member 3 is stuck or difficult to align due to the opening being too narrow or the edge being sharp, greatly reducing the operation difficulty, improving the installation efficiency, making the installation process of the protective sleeve 4 more smooth, reducing the possibility of misoperation, and further protecting the safety of the medical staff.

[0027] As shown in Figures 1-3As shown, the guiding groove 5 is not provided with an upward inclined angle at one end, and the elastic clamping plate 7 is located at the position where the guiding groove 5 begins to have an inclined angle; the needle wing piece 3 is in an initial horizontal state, and when it slides to the end of the guiding groove 5 having an upward inclined angle, the needle wing piece 3 is controlled to be in a V-shaped folded state by the inclined angle; the needle wing piece 3 comprises a mounting tube 8 sleeved on the needle 2, and the mounting tube 8 is symmetrically provided with clamping plates 9 on the outer periphery, the clamping plates 9 are made of soft rubber, and the clamping plates 9 are each provided with a wing plate 10 at one end, and the upper surface of the clamping plate 9 is lower than the upper surface of the wing plate 10;

[0028] The medical staff can conveniently operate the needle 2 to perform arterial or venous puncture through the wing plate 10, and when the needle 2 needs to be stored, the protective sleeve 4 is pushed along the conveying pipe 1 towards the needle 2, the clamping plate 9 gradually slides into the guiding groove 5, and in this process, the needle wing piece 3 as a whole remains in a horizontal state and smoothly slides in the guiding groove 5, and the needle 2 is driven to slide towards the protective sleeve 4 through the mounting tube 8, when it slides to the position where the guiding groove 5 begins to have an upward inclined angle, one end of the clamping plate 9 first contacts the inclined surface and is subjected to an upward force, and the clamping plate 9 is made of soft rubber and has good flexibility, and since the upper surface of the clamping plate 9 is lower than the upper surface of the wing plate 10, the clamping plate 9 has a relatively small thickness and can better deform, so that the clamping plate 9 is controlled to be in a V-shaped folded state under the action of the inclined angle of the guiding groove 5, and the clamping plate 9 is firmly fixed in the guiding groove 5 having an inclined angle by the elastic clamping plate 7, so that the needle 2 is stored in the protective sleeve 4, and the V-shaped structure increases the contact area of the clamping plate 9 and the elastic clamping plate 7, tightly clamps the V-shaped structure of the clamping plate 9, and firmly locks the needle wing piece 3 as a whole in the protective sleeve 4.

[0029] As shown in Figures 1-3 , the lower end of the elastic clamping plate 7 is lower than the top side of the guiding groove 5, and after the clamping plate 9 slides to the end of the guiding groove 5 having an inclined angle and is clamped and fixed by the elastic clamping plate 7, since the lower end of the elastic clamping plate 7 is lower than the top side of the guiding groove 5, the lower end of the elastic clamping plate 7 can better resist the clamping plate 9, improve the reliability of locking, prevent the clamping plate 9 from accidentally coming out, and further ensure the safety and stability of the storage of the needle 2.

[0030] As shown in Figure 1 , Figure 4As shown, the protective sleeve 4 is located at the end of the needle 2 closer to the handle 11, the surface of the handle 11 is provided with anti-skid convex points, the handle 11 is designed to provide a convenient gripping position for medical staff when pushing the protective sleeve 4, in a busy medical environment, medical staff need to quickly and accurately complete the needle 2 storage operation after puncture, with the handle 11, medical staff can more easily push the protective sleeve 4 to move to the needle 2 direction, compared with directly pushing the smooth surface of the protective sleeve 4, greatly improves the convenience of operation, and the anti-skid convex points increase the friction between the hands of medical staff and the handle 11, ensuring that medical staff can stably apply force when pushing the protective sleeve 4.

[0031] As shown in Figure 1 , the needle 2 is movably sleeved with a needle sleeve 12, the needle sleeve 12 can avoid being contaminated by the outside world before the needle 2 punctures, and can be directly pulled off during use, and after the intravenous puncture is completed, the needle 2 is protected by the protective sleeve 4, so that the needle sleeve 12 does not need to be manually sleeved back, avoiding the needle 2 from injuring the medical staff.

[0032] As shown in Figure 1 , Figure 4 , the inner surface of the protective sleeve 4 is provided with an anti-skid member 13 away from the end of the needle 2, the inner wall of the anti-skid member 13 is tightly attached to the delivery tube 1, the anti-skid member 13 includes but is not limited to sponge and rubber, and the anti-skid member 13 can better control the position of the protective sleeve 4, avoiding the protective sleeve 4 from sliding randomly on the delivery tube 1, and affecting the puncture operation of the medical staff.

[0033] The working principle of the arteriovenous puncture device is as follows: the medical staff pushes the protective sleeve 4 along the conveying pipe 1 to the direction of the needle 2 by the handle 11, at this time, the clamping plate 9 is opposite to the opening end of the guide groove 5, the medical staff continues to push the protective sleeve 4, the clamping plate 9 starts to slide to the inside of the guide groove 5 through the opening end of the guide groove 5, along with the advancement of the protective sleeve 4, the clamping plate 9 drives the needle 2 to move along the guide groove 5 through the mounting pipe 8, in this process, the needle wing piece 3 keeps a horizontal form, and smoothly slides in the guide groove 5, when sliding to the position that the guide groove 5 starts to have an upward inclination angle, the clamping plate 9 will contact the elastic clamping plate 7, so as to extrude the elastic clamping plate 7, and make the elastic clamping plate 7 elastically deform, when the clamping plate 9 has passed the elastic clamping plate 7 and entered the guide groove 5 having an inclination angle end, the clamping plate 9 no longer extrudes the elastic clamping plate 7, the elastic clamping plate 7 restores to the original state, and when the clamping plate 9 slides to the inside of the guide groove 5 having an upward inclination angle end, one end of the clamping plate 9 first contacts the inclined surface and is subjected to an upward force, so that the clamping plate 9 is controlled to be in a V-shaped folding form under the action of the inclination angle of the guide groove 5, the V-shaped structure increases the contact area of the clamping plate 9 and the elastic clamping plate 7, and because the lower end of the elastic clamping plate 7 is lower than the top side of the guide groove 5, after the whole needle wing piece 3 enters the guide groove 5 having an inclination angle end, the lower end of the elastic clamping plate 7 can better resist the clamping plate 9, the locking reliability is improved, the clamping plate 9 is prevented from accidentally coming out, and then through the design, the medical staff can safely store the needle 2 in the protective sleeve 4 without directly contacting the needle 2 by hand, the risk of being pricked in the process of re-sheathing the needle sleeve 12 due to operation error is effectively avoided, the possibility of cross infection caused by the puncture needle carrying pathogens is also reduced, the problem of storing the puncture needle after use is properly solved, and the risk of pricking other personnel is reduced.

[0034] In addition, it should be further pointed out that, in the description of the utility model, unless otherwise clearly defined and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] The above is the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. An arteriovenous puncture device comprising a delivery tube (1), characterized in that, The needle head (2) is provided with a needle wing piece (3), the needle wing piece (3) is generally axially symmetrical, the protective sleeve (4) is movably sleeved on the conveying pipe (1), the surface of the protective sleeve (4) is symmetrically provided with a guide groove (5) and an expansion groove (6), one end of the expansion groove (6) is communicated with the guide groove (5), the protective sleeve (4) is symmetrically provided with an elastic clamping plate (7), the elastic clamping plate (7) is correspondingly arranged at the lower part of the expansion groove (6), so that an elastic cavity is formed between the elastic clamping plate (7) and the expansion groove (6), the elastic clamping plate (7) can be elastically deformed through the elastic cavity, the needle wing piece (3) can be slid into the guide groove (5) through the opening end of the guide groove (5), and the needle wing piece (3) is clamped by the elastic clamping plate (7) after being slid to the other end of the guide groove (5), so that the needle head (2) is stored in the protective sleeve (4).

2. The arteriovenous puncture device of claim 1, wherein, The opening end of the guide groove (5) is wide and has a curved surface.

3. The arteriovenous puncture device of claim 2, wherein, The end of the guide groove (5) not being open is provided with an upward inclined angle, and the elastic clamping plate (7) is located at the position where the guide groove (5) starts to have an inclined angle.

4. The arteriovenous puncture device of claim 3, wherein, The needle wing piece (3) is in a horizontal state initially, and is controlled to be in a V-shaped folded state after being slid to the end of the guide groove (5) having an upward inclined angle.

5. The arteriovenous puncture device of claim 4, wherein, The needle wing piece (3) comprises a mounting pipe (8) sleeved on the needle head (2), the mounting pipe (8) is symmetrically provided with a clamping plate (9) on the outer circumferential surface, the clamping plate (9) is made of soft rubber, one end of the clamping plate (9) is provided with a wing plate (10), and the upper surface of the clamping plate (9) is lower than the upper surface of the wing plate (10).

6. The arteriovenous puncture device of claim 5, wherein, The lower end of the elastic clamping plate (7) is lower than the top side of the guide groove (5).

7. The arteriovenous puncture device of claim 6, wherein, The protective sleeve (4) is provided with a handle (11) at the end close to the needle head (2), and the surface of the handle (11) is provided with anti-skid convex points.

8. The arteriovenous puncture device of claim 7, wherein, The needle head (2) is movably sleeved with a needle sleeve (12).

9. The arteriovenous puncture device of claim 8, wherein, The inner surface of the protective sleeve (4) is provided with an anti-skid piece (13) away from the needle head (2), and the inner wall of the anti-skid piece (13) is tightly attached to the conveying pipe (1).

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