Nursing internal fistula puncture needle with negative pressure

Abstract

The invention provides an internal fistula puncture needle with negative pressure for nursing, and relates to the technical field of internal fistula puncture equipment. Comprising a puncture needle, the puncture needle is connected with a drainage tube, the tail end of the drainage tube is provided with a connecting tube opening, and the connecting tube opening is detachably connected with a negative pressure mechanism; the negative pressure mechanism comprises a negative pressure pipe, a vertical sliding groove is formed in the negative pressure pipe, a negative pressure plate and a sliding plate are slidably connected to the vertical sliding groove, a reset spring is arranged between the negative pressure plate and the sliding plate, and a pull rod is arranged on the side, away from the negative pressure plate, of the sliding plate. Compared with the prior art, the puncture needle is simple in structure and convenient to use, puncture accuracy can be effectively improved, and medical staff can conveniently observe whether puncture succeeds or not.

Description

Technical Field

[0001] The invention relates to the technical field of internal fistula puncture equipment, in particular to an internal fistula puncture needle with negative pressure for nursing use. Background Art

[0002] Hemodialysis is the main renal replacement therapy for patients with uremia. Arteriovenous fistula is the lifeline of hemodialysis patients. About 95% of patients use arteriovenous fistula as a vascular access for hemodialysis. During each hemodialysis treatment, two punctures are made at the arteriovenous fistula with a fistula puncture needle, which serves as a blood drainage and blood return pathway respectively.

[0003] It is difficult to accurately grasp the angle of the existing puncture needle when inserting the needle, and it is heavily dependent on the actual puncture experience of medical staff. Even experienced medical staff find it difficult to ensure the accuracy of puncture when facing some patients or after high-intensity work, and multiple punctures are required, which increases the pain of the patient.

[0004] Therefore, there is an urgent need for a nursing fistula puncture needle with negative pressure to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a nursing fistula puncture needle with negative pressure, which has a simple structure, is easy to use, can effectively improve the puncture accuracy, and is convenient for medical staff to observe whether the puncture is successful.

[0006] The embodiment of the present invention is achieved as follows:

[0007] An embodiment of the present application provides a nursing fistula puncture needle with negative pressure, which includes a puncture needle, which is connected to a drainage tube, and a connecting pipe mouth is provided at the end of the drainage tube, and the connecting pipe mouth is detachably connected to a negative pressure mechanism; the negative pressure mechanism includes a negative pressure tube, a vertical slide groove is provided in the negative pressure tube, a negative pressure plate and a sliding plate are slidably connected to the vertical slide groove, a reset spring is provided between the negative pressure plate and the sliding plate, and a pulling rod is provided on the side of the sliding plate away from the negative pressure plate.

[0008] In some embodiments of the present invention, the drainage tube is arranged in an "S" shape.

[0009] In some embodiments of the present invention, a groove is provided on the peripheral side of the negative pressure plate, and a filling air bag is provided in the groove; the filling air bag is connected to an inflation tube, and the inflation tube passes through the sliding plate and is located outside the sliding plate.

[0010] In some embodiments of the present invention, a base plate is further included, a support frame is arranged on the base plate, a rotating plate is hingedly arranged on the support frame, a sliding groove is arranged on the rotating plate, and the puncture needle is slidably connected to the sliding groove.

[0011] In some embodiments of the present invention, a fixed block is fixedly provided on the above-mentioned puncture needle, and the fixed block is slidably connected to the sliding groove; a convex plate is provided at the upper end of the fixed block, a locking bolt is threadedly connected to the convex plate, and a friction block is provided at the bottom of the locking bolt.

[0012] In some embodiments of the present invention, an angle ruler is provided on the support frame, and a pointer is provided on the rotating plate, and the pointer is adapted to the angle ruler.

[0013] In some embodiments of the present invention, a depth scale is provided on the sliding chute.

[0014] In some embodiments of the present invention, the connecting pipe port is threadedly connected with a fastening ring cap, one inner end of the fastening ring cap is provided with a thread, and the inner diameter of the other end thereof decreases as it is farther from the thread.

[0015] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0016] It is difficult to accurately grasp the angle of the existing puncture needle when inserting the needle. It is heavily dependent on the actual puncture experience of medical staff, and it is difficult to ensure the accuracy of the puncture. Multiple punctures are required, which increases the pain of the patient. The present invention provides a nursing fistula puncture needle with negative pressure, which includes a puncture needle, the puncture needle is connected to a drainage tube, the end of the drainage tube is provided with a connecting pipe mouth, and the connecting pipe mouth is detachably connected to a negative pressure mechanism; the negative pressure mechanism includes a negative pressure tube, a vertical slide groove is provided in the negative pressure tube, a negative pressure plate and a sliding plate are slidably connected to the vertical slide groove, a reset spring is provided between the negative pressure plate and the sliding plate, and a pull rod is provided on the side of the sliding plate away from the negative pressure plate.

[0017] The present invention connects a negative pressure mechanism to the puncture needle, and provides negative pressure to the puncture needle through the negative pressure mechanism, so that medical staff can timely find that the puncture needle has entered the blood vessel by sucking blood through negative pressure, thereby improving the success rate of puncture and effectively reducing the occurrence of repeated punctures and complications. The negative pressure plate and sliding plate arranged in the negative pressure tube allow medical staff to move the sliding plate by pulling the pull rod, thereby moving the negative pressure plate through the reset spring, thereby providing stable negative pressure to the puncture needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a front view of an embodiment of the present invention;

[0020] Figure 2 is a top view of a fixing block according to an embodiment of the present invention;

[0021] Figure 3 is a cross-sectional view of a negative pressure tube according to an embodiment of the present invention;

[0022] Figure 4 It is a cross-sectional view of a fastening ring cap according to an embodiment of the present invention.

[0023] Icons: 1. Base plate; 2. Support frame; 3. Angle ruler; 4. Pointer; 5. Rotating plate; 6. Puncture needle; 7. Fixed block; 8. Convex plate; 9. Locking bolt; 10. Friction block; 11. Drainage tube; 12. Fastening ring cap; 13. Connecting pipe mouth; 14. Negative pressure tube; 15. Negative pressure plate; 16. Sliding plate; 17. Filling airbag; 18. Inflating tube; 19. Reset spring; 20. Pull rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example:

[0027] Please refer to Figure 1-4 The present embodiment provides a nursing fistula puncture needle with negative pressure, which includes a puncture needle 6, which is connected to a drainage tube 11, and a connecting pipe port 13 is provided at the end of the drainage tube 11, and the connecting pipe port 13 is detachably connected to a negative pressure mechanism; the negative pressure mechanism includes a negative pressure tube 14, and a vertical slide groove is provided in the negative pressure tube 14, and a negative pressure plate 15 and a sliding plate 16 are slidably connected on the vertical slide groove, a return spring 19 is provided between the negative pressure plate 15 and the sliding plate 16, and a pulling rod 20 is provided on the side of the sliding plate 16 away from the negative pressure plate 15.

[0028] It is difficult to accurately grasp the angle of the existing puncture needle 6 when inserting the needle. It is heavily dependent on the actual puncture experience of medical staff, and it is difficult to ensure the accuracy of puncture. Multiple punctures are required, which increases the pain of the patient. The present invention connects a negative pressure mechanism to the puncture needle 6, and provides negative pressure to the puncture needle 6 through the negative pressure mechanism, so that medical staff can timely find that the puncture needle 6 has entered the blood vessel by sucking blood through negative pressure, thereby improving the success rate of puncture and effectively reducing the occurrence of repeated punctures and complications. The negative pressure plate 15 and the sliding plate 16 arranged in the negative pressure tube 14 enable medical staff to move the sliding plate 16 by pulling the pull rod 20, thereby moving the negative pressure plate 15 through the reset spring 19, thereby providing a stable negative pressure to the puncture needle 6. The resistance between the negative pressure plate 15 and the negative pressure tube 14 cooperates with the pulling of the reset spring 19 to ensure the slow movement of the negative pressure plate 15, and avoid the situation where the negative pressure is too large due to too fast movement. It can be understood that the resistance between the negative pressure plate 15 and the negative pressure tube 14 is smaller than the resistance between the sliding plate 16 and the negative pressure tube 14, thereby preventing the sliding plate 16 from being pulled back.

[0029] In some embodiments of the present invention, the drainage tube 11 is arranged in an "S" shape. The drainage tube 11 arranged in an "S" shape can provide a good buffering position and can effectively prevent blood from being sucked into the negative pressure tube 14.

[0030] In some embodiments of the present invention, a groove is provided on the circumference of the negative pressure plate 15, and a filling airbag 17 is provided in the groove; the filling airbag 17 is connected to an inflation tube 18, and the inflation tube 18 passes through the sliding plate 16 and is located outside the sliding plate 16. Medical staff can inflate the filling airbag 17 in the groove of the negative pressure plate 15 through the inflation tube 18, thereby adjusting the pressure between the negative pressure plate 15 and the negative pressure tube 14, thereby effectively controlling the movement resistance of the negative pressure plate 15.

[0031] In some embodiments of the present invention, a base plate 1 is further included, a support frame 2 is provided on the base plate 1, a rotating plate 5 is hingedly provided on the support frame 2, a sliding groove is provided on the rotating plate 5, and a puncture needle 6 is slidably connected to the sliding groove. The hinged rotating plate 5 can be well adjusted in angle, and the sliding groove provided in conjunction with the rotating plate 5 can well ensure that the insertion angle is consistent with the adjusted rotating plate 5. It is understandable that a locking structure is provided at the hinge between the support frame 2 and the rotating plate 5 to prevent it from rotating when not needed.

[0032] In some embodiments of the present invention, a fixing block 7 is fixedly provided on the puncture needle 6, and the fixing block 7 is slidably connected to the sliding groove; a convex plate 8 is provided at the upper end of the fixing block 7, and a locking bolt 9 is threadedly connected to the convex plate 8, and a friction block 10 is provided at the bottom of the locking bolt 9. The friction block 10 connected to the locking bolt 9 allows medical staff to fix the insertion depth of the puncture needle 6 by screwing the locking bolt 9 in and out.

[0033] In some embodiments of the present invention, an angle ruler 3 is provided on the support frame 2, and a pointer 4 is provided on the rotating plate 5, and the pointer 4 is adapted to the angle ruler 3. A depth ruler is provided on the sliding chute. The setting of the angle ruler 3 and the depth ruler can well control the insertion angle and depth of the puncture needle 6, which is convenient for medical staff to observe and ensure the puncture effect.

[0034] In some embodiments of the present invention, the connecting pipe mouth 13 is threadedly connected to a fastening ring cap 12, and one end of the inner side of the fastening ring cap 12 is provided with a thread, and the inner diameter of the other end thereof is smaller as the distance from the thread increases. The fastening ring cap 12 threadedly connected to the connecting pipe mouth 13 allows medical personnel to effectively connect the negative pressure tube 14 or connect the internal fistula tube after the puncture is successful by screwing the fastening ring cap 12 in and out.

[0035] Furthermore, during use, a detachable disposable diaphragm may be provided in the connecting pipe port 13 or the negative pressure pipe 14 to avoid sterilization operation during repeated use.

[0036] In summary, the embodiment of the present invention provides a nursing fistula puncture needle with negative pressure, which includes a puncture needle 6, which is connected to a drainage tube 11, and a connecting tube port 13 is provided at the end of the drainage tube 11, and the connecting tube port 13 is detachably connected to a negative pressure mechanism; the negative pressure mechanism includes a negative pressure tube 14, a vertical slide groove is provided in the negative pressure tube 14, a negative pressure plate 15 and a sliding plate 16 are slidably connected on the vertical slide groove, a reset spring 19 is provided between the negative pressure plate 15 and the sliding plate 16, and a pull rod 20 is provided on the side of the sliding plate 16 away from the negative pressure plate 15. The present invention connects the negative pressure mechanism to the puncture needle 6, and provides negative pressure to the puncture needle 6 through the negative pressure mechanism, so that medical staff can timely find that the puncture needle 6 has entered the blood vessel by sucking blood through negative pressure, thereby improving the success rate of puncture and effectively reducing the occurrence of repeated punctures and complications. The negative pressure plate 15 and the sliding plate 16 arranged in the negative pressure tube 14 allow medical personnel to move the sliding plate 16 by pulling the pulling rod 20 , thereby moving the negative pressure plate 15 through the return spring 19 , thereby providing a stable negative pressure to the puncture needle 6 .

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nursing fistula puncture needle with negative pressure, characterized in that: It includes a puncture needle, which is connected to a drainage tube. A connecting pipe mouth is provided at the end of the drainage tube, and the connecting pipe mouth is detachably connected to a negative pressure mechanism; the negative pressure mechanism includes a negative pressure tube, a vertical slide groove is provided in the negative pressure tube, a negative pressure plate and a sliding plate are slidably connected to the vertical slide groove, a return spring is provided between the negative pressure plate and the sliding plate, and a pulling rod is provided on the side of the sliding plate away from the negative pressure plate.

2. The internal fistula puncture needle with negative pressure for nursing use according to claim 1, characterized in that: The drainage tube is arranged in an "S" shape.

3. The internal fistula puncture needle with negative pressure for nursing use according to claim 2, characterized in that: A groove is arranged on the peripheral side of the negative pressure plate, and a filling air bag is arranged in the groove; the filling air bag is connected with an inflation tube, and the inflation tube passes through the sliding plate and is located outside the sliding plate.

4. The internal fistula puncture needle with negative pressure for nursing use according to claim 1, characterized in that: It also includes a base plate, a support frame is arranged on the base plate, a rotating plate is hingedly arranged on the support frame, a sliding groove is arranged on the rotating plate, and the puncture needle is slidably connected to the sliding groove.

5. The internal fistula puncture needle with negative pressure for nursing use according to claim 4, characterized in that: A fixing block is fixedly arranged on the puncture needle, and the fixing block is slidably connected with the sliding groove; a convex plate is arranged on the upper end of the fixing block, a locking bolt is threadedly connected on the convex plate, and a friction block is arranged on the bottom of the locking bolt.

6. The internal fistula puncture needle with negative pressure for nursing use according to claim 5, characterized in that: The support frame is provided with an angle ruler, and the rotating plate is provided with a pointer, and the pointer is adapted to the angle ruler.

7. The internal fistula puncture needle with negative pressure for nursing use according to claim 6, characterized in that: A depth scale is arranged on the sliding chute.

8. The internal fistula puncture needle with negative pressure for nursing use according to claim 1, characterized in that: The connecting pipe mouth is threadedly connected and provided with a fastening ring cap, one end of the inner side of the fastening ring cap is provided with a thread, and the inner diameter of the other end thereof is smaller as it is farther from the thread.

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