Hemodialysis remaining needle with pipeline clamp

Abstract

The hemodialysis indwelling needle with the pipeline clamp comprises an indwelling base, and the side wall of the indwelling base is connected with a pipe connecting assembly. The indwelling cannula is connected to one end of the indwelling seat; the isolation plug is inserted into the remaining seat in an interference manner; one end of the puncture needle penetrates through the isolation plug and extends out of the indwelling cannula from the indwelling seat, and the other end of the puncture needle is fixedly connected with a needle seat; the protective cap is connected to the end, provided with the isolation plug, of the remaining base in an inserted mode, the side wall of the protective cap is fixedly connected with a first needle holding wing, one end of the needle base is detachably connected to one end of the protective cap, and the end, away from the needle base, of the protective cap is provided with a clamping and embedding structure matched with the remaining base in an embedded mode. After the indwelling needle is implanted and a puncture needle is taken out, the protective cap can be turned over, the needle seat is removed, and the end, deviating from the needle seat, of the protective cap is clamped and embedded on the indwelling seat by means of the clamping and embedding structure, so that the isolation plug can be effectively prevented from shifting and falling off; the stable isolation effect of the isolation plug in the indwelling process of the indwelling needle in a patient is ensured as much as possible, and the infection possibility of the patient is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a hemodialysis indwelling needle with a pipeline clamp. Background Art

[0002] There are nearly 1 million hemodialysis patients in my country. The guidelines recommend fistula as the preferred access. The use of fistula means puncture. The arteriovenous puncture needles currently used in clinical practice are made of metal. During dialysis, the limbs on the fistula side are often immobile, and movement can easily cause needle leakage. At present, some indwelling needles for dialysis have appeared on the market, which solves the problem of needle leakage during patient movement, but there are also some problems, which can easily cause blood contamination and are not in line with hospital infection.

[0003] In the related art, a Chinese patent with announcement number CN219090478U discloses a disposable hemodialysis indwelling needle, including a needle, a needle seat, a catheter and a rubber connector. The bottom of the needle is connected to the top of the needle seat, the bottom of the needle seat is connected to the end of the catheter close to the needle seat, the end of the catheter away from the needle seat is connected to the top of the rubber connector, the surface of the needle seat is provided with a mounting sleeve, both sides of the mounting sleeve are fixedly connected with butterfly plates, the right side of the catheter close to the needle seat is connected to a tube, the top of the surface of the tube is provided with a switch assembly, and the end of the tube away from the needle seat is threadedly connected with a heparin cap.

[0004] Regarding the above-mentioned related technologies, the indwelling needle is an invasive operation and is prone to infection during use, especially during hemodialysis. After the steel needle is pulled out from the needle seat, the needle seat port needs to be sealed by the sealing rubber in the needle seat. However, during the needle removal process, the sealing rubber may move in the needle seat, so that after the patient uses it for a long time, there may be a risk of infection caused by the loosening of the sealing rubber. Utility Model Content

[0005] The utility model aims to provide a hemodialysis indwelling needle with a pipeline clamp, aiming to solve the problem that after the steel needle in the needle seat of the traditional indwelling needle is pulled out, the sealing rubber may be loosened and then there is a risk of infection.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hemodialysis indwelling needle with a pipeline clamp, comprising:

[0008] A retention seat, the side wall of which is connected with a pipe assembly;

[0009] A retention sleeve connected to one end of the retention seat;

[0010] An isolation plug is inserted into the retention seat through interference fit;

[0011] A puncture needle, one end of which penetrates the isolation plug and extends from the retention seat to the outside of the retention sleeve, and the other end of which is fixedly connected to the needle seat;

[0012] A protective cap is plugged and connected to one end of the retention seat provided with the isolation plug, and a first needle holding wing is fixedly connected to its side wall. One end of the needle seat is detachably connected to one end of the protective cap, and the end of the protective cap facing away from the needle seat has a card-embedded structure that fits with the retention seat.

[0013] In an optional solution: the first needle holding wing extends toward one end away from the indwelling sleeve, the side wall of the indwelling seat is fixedly connected with a second needle holding wing, and the second needle holding wing extends toward one end close to the indwelling sleeve.

[0014] In an optional solution: a groove is formed at one end of the protective cap close to the retention seat and is plugged into and adapted to the retention seat; a slot is formed on the bottom wall of the groove and penetrates the protective cap; a plug block is fixedly connected to the side wall of the needle seat and is plugged into and adapted to the slot; and a side strip is fixedly connected to the inner wall of the retention seat;

[0015] When the plug block is plugged into the slot, the needle seat is pressed against the side strip.

[0016] In an optional solution, the embedding structure includes an embedding groove provided at one end of the protective cap away from the groove, and the retaining seat is interference-fitted with the embedding groove.

[0017] In an optional solution: the plug block and the side strip are arranged opposite to each other compared to the needle seat axis, the side strip protrudes from the end face of the retention seat, the side wall of the groove is provided with an avoidance groove which is plugged and adapted with the protruding part of the side strip, and the side strip is plugged and adapted with the slot.

[0018] In an optional solution, the free end of the insert block extends to protrude from the bottom wall of the embedding groove, and when the first needle holding wing is aligned with the second needle holding wing, the side strip protrusion is aligned with the slot.

[0019] In an optional solution: the connecting pipe assembly includes a catheter connected to the side wall of the retention seat, a tube clamp arranged on the catheter, and a heparin cap arranged at the free end of the catheter.

[0020] The advantages of the utility model compared with the prior art are:

[0021] The utility model uses the first needle holding wing to pull the protective cap to pull the puncture needle on the needle seat out of the retention sleeve, leaving the soft retention sleeve in the patient's blood vessel; then the protective cap is flipped over, the needle seat is removed from the protective cap, and then the end of the protective cap away from the needle seat is embedded in the retention seat with the help of the card embedding structure, which can effectively prevent displacement and fall off of the isolation plug in the retention seat, and ensure the stable isolation effect of the isolation plug during the retention of the retention needle in the patient's body as much as possible, reducing the possibility of infection in the patient. At this time, the first needle holding wing on the protective cap can still stay on the retention seat, so that when the retention seat is fixed by medical tape, a larger contact area can be obtained, thereby ensuring the stability of the retention seat fixed on the patient's body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0023] Figure 2 It is a sectional view of the overall structure of an embodiment of the utility model.

[0024] Figure 3 It is a structural cross-sectional view of the protective cap of the embodiment of the utility model after being turned over.

[0025] Figure 4 It is a schematic diagram of the overall structure of the protective cap of an embodiment of the utility model.

[0026] Reference numerals:

[0027] 11. Indwelling seat; 111. Side strip; 12. Indwelling sleeve; 13. Isolation plug; 14. Second needle holding wing;

[0028] 21. puncture needle; 22. needle holder; 221. insert block;

[0029] 3. Protective cap; 31. First needle holding wing; 32. Groove; 33. Slot; 34. Embedded groove; 35. Avoidance groove;

[0030] 41. Catheter; 42. Tube clamp; 43. Heparin cap. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail in conjunction with the accompanying drawings and embodiments below; in the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.

[0032] Embodiment 1:

[0033] like Figure 1-Figure 4 As shown, a hemodialysis indwelling needle with a pipeline clamp provided by the utility model comprises:

[0034] The retaining seat 11 has a side wall connected with a pipe assembly for controlling the inlet and outlet of liquid;

[0035] The retention sleeve 12 is connected to one end of the retention seat 11 and is specifically a plastic hose;

[0036] The isolation plug 13 is inserted into the retention seat 11 through interference fit and is specifically a rubber plug;

[0037] The puncture needle 21 has one end that penetrates the isolation plug 13 and extends from the retention seat 11 to the outside of the retention sleeve 12, and the other end is fixedly connected to the needle seat 22, and the puncture needle 21 is plugged and adapted to the retention sleeve 12;

[0038] The protective cap 3 is plugged and connected to one end of the retention seat 11 provided with an isolation plug 13, and is specifically sleeved on the end of the retention seat 11; its side wall is fixedly connected to the first needle holding wing 31, one end of the needle seat 22 is detachably connected to one end of the protective cap 3, and the end of the protective cap 3 away from the needle seat 22 has a card-embedded structure that fits with the retention seat 11.

[0039] After such arrangement, when the indwelling needle of the present application is implanted in the patient's blood vessel, the protective cap 3 can be pulled with the help of the first needle holding wing 31 to pull the puncture needle 21 on the needle seat 22 out of the indwelling sleeve 12, so that the soft indwelling sleeve 12 remains in the patient's blood vessel; then the protective cap 3 is turned over, and the needle seat 22 is removed from the protective cap 3, and then the end of the protective cap 3 away from the needle seat 22 is embedded in the indwelling seat 11 with the help of the embedding structure, which can effectively prevent the isolation plug 13 in the indwelling seat 11 from displacement and fall off, and ensure the stable isolation effect of the isolation plug 13 during the indwelling needle in the patient's body as much as possible, thereby reducing the possibility of infection in the patient.

[0040] At this time, the first needle holding wing 31 on the protective cap 3 can still stay on the retention seat 11, so that when the retention seat 11 is fixed by medical tape, a larger contact area can be obtained, thereby ensuring the stability of the retention seat 11 fixed to the patient's body.

[0041] In order to ensure the stability of the indwelling needle during implantation, refer to Figure 2 and Figure 3, a second needle holding wing 14 is fixedly connected to the side wall of the indwelling seat 11, and the second needle holding wing 14 extends toward the end close to the indwelling sleeve 12, and the first needle holding wing 31 extends toward the end away from the indwelling sleeve 12. Therefore, when the first needle holding wing 31 and the second needle holding wing 14 are laid flat, the puncture needle 21 and the indwelling sleeve 12 can be pushed from both sides to improve the success rate of the indwelling needle implantation in one time; and the first needle holding wing 31 extends toward the end away from the indwelling sleeve 12, which can avoid the interference of the takeover assembly on the force application point of the first needle holding wing 31 when the indwelling needle is pushed with the help of the first needle holding wing 31, and improve the operation space of the first needle holding wing 31.

[0042] In order to realize convenient installation and removal of the needle seat 22 on the protective cap 3, a groove 32 which is plugged and matched with the retention seat 11 is opened at one end of the protective cap 3 close to the retention seat 11, and a slot 33 which penetrates the protective cap 3 is opened on the bottom wall of the groove 32. An insertion block 221 which is plugged and matched with the slot 33 is fixedly connected to the side wall of the needle seat 22, and a side strip 111 is fixedly connected to the inner wall of the retention seat 11. The side strip 111 and the insertion block 221 are both arranged axially along the retention seat 11; when the insertion block 221 is plugged and connected with the slot 33, the needle seat 22 is pressed tightly against the side strip 111.

[0043] In this way, when the needle seat 22 is installed on the protective cap 3, refer to Figure 2 and Figure 3 , insert the end of the needle seat 22 away from the puncture needle 21 into the groove 32 on the protective cap 3, and insert the insert block 221 into the slot 33, and then put the protective cap 3 into the end of the retention seat 11, and the side strips 111 on the retention seat 11 press the needle seat 22 tightly, so that the needle seat 22 can be fixed on the protective cap 3 with the help of the clamping effect of the insert block 221 and the side strips 111 after the protective cap 3 is installed on the retention seat 11; and after the protective cap 3 is removed from the retention seat 11, the fixing effect of the needle seat 22 on the protective cap 3 is weak, and it can be easily removed, and the risk of medical staff being scratched when removing the puncture needle 21 is reduced.

[0044] Specifically, refer to Figure 3 and Figure 4 The card-embedded structure includes an embedding groove 34 provided at the end of the protective cap 3 away from the groove 32, and the retention seat 11 is plugged and adapted with the embedding groove 34 through interference; and the plug block 221 and the side strip 111 are arranged opposite to the axis of the needle seat 22, and the side strip 111 is arranged protruding from the end surface of the retention seat 11, and an avoidance groove 35 is provided on the side wall of the groove 32 to be plugged and adapted with the protruding part of the side strip 111, and the side strip 111 is plugged and adapted with the slot 33. And when the end of the protective cap 3 with the groove 32 is plugged and connected with the retention seat 11, the first needle holding wing 31 and the second needle holding wing 14 are coplanar.

[0045] After such arrangement, when the puncture needle 21 of the present application is implanted, the insert block 221 on the needle seat 22 is inserted into the slot 33, and the side strip 111 on the retention seat 11 is inserted into the avoidance groove 35. At this time, the first needle holding wing 31 and the second needle holding wing 14 are coplanar, which can facilitate medical staff to stably implant the retention needle into the patient's blood vessel; and when the puncture needle 21 is implanted, the protective cover and the puncture needle 21 are pulled out with the help of the first needle holding wing 31, and then the protective cap 3 is reversely sleeved on the retention seat 11, the side strip 111 can be aligned with the slot 33, so that in the process of reversely sleeved on the retention seat 11, the protruding part of the side strip 111 is inserted into the slot 33, and the insert block 221 is pushed out of the slot 33, so that the needle seat 22 can fall off from the protective cap 3 automatically without the need for medical staff to hold the needle seat 22 or the puncture needle 21 to be pulled out, further reducing the risk of needle removal.

[0046] And, refer to Figure 1 The above-mentioned pipe assembly includes a catheter 41 connected to the side wall of the retention seat 11, a tube clamp 42 arranged on the catheter 41, and a heparin cap 43 arranged at the free end of the catheter 41. The catheter 41 is arranged on the side wall of the retention seat 11 at an angle away from the retention sleeve 12.

[0047] Embodiment 2:

[0048] like Figure 3 As shown, the difference between this embodiment and the first embodiment is that:

[0049] The free end of the insert block 221 extends to protrude from the bottom wall of the embedding groove 34, and when the first needle holding wing 31 is aligned with the second needle holding wing 14, the protruding portion of the side strip 111 is aligned with the slot 33. This makes it convenient for medical staff to easily withdraw the needle after the indwelling needle is implanted, and the error tolerance rate is higher; and the insert block 221 protrudes from the bottom wall of the embedding groove 34, which is also more conducive to quickly loosening the needle seat 22 on the protective cap 3, and conveniently taking out the puncture needle 21 after use.

[0050] The specific working effects of the utility model are as follows:

[0051] When the entire device is in use, after the indwelling needle of the present application is implanted in the patient's blood vessel, the protective cap 3 can be pulled with the help of the first needle holding wing 31 to pull the puncture needle 21 on the needle seat 22 out of the indwelling sleeve 12, so that the soft indwelling sleeve 12 remains in the patient's blood vessel; then the protective cap 3 is turned over, and the needle seat 22 is removed from the protective cap 3, and then the end of the protective cap 3 away from the needle seat 22 is embedded in the indwelling seat 11 with the help of the embedding structure, which can effectively prevent the isolation plug 13 in the indwelling seat 11 from displacement and fall off, and ensure the stable isolation effect of the isolation plug 13 during the indwelling of the indwelling needle in the patient's body as much as possible, thereby reducing the possibility of infection in the patient.

[0052] At this time, the first needle holding wing 31 on the protective cap 3 can still stay on the retention seat 11, so that when the retention seat 11 is fixed by medical tape, a larger contact area can be obtained, thereby ensuring the stability of the retention seat 11 fixed to the patient's body.

[0053] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0054] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A hemodialysis indwelling needle with a pipeline clamp, characterized in that: include: A retaining seat (11) has a side wall connected to a pipe assembly; A retention sleeve (12) connected to one end of the retention seat (11); An isolation plug (13) is inserted into the retention seat (11) with interference fit; A puncture needle (21), one end of which penetrates the isolation plug (13) and extends from the retention seat (11) to the outside of the retention sleeve (12), and the other end of which is fixedly connected to a needle seat (22); A protective cap (3) is plugged and connected to one end of the retention seat (11) provided with the isolation plug (13), and a first needle holding wing (31) is fixedly connected to its side wall. One end of the needle seat (22) is detachably connected to one end of the protective cap (3), and the end of the protective cap (3) facing away from the needle seat (22) has a snap-fit ​​structure that fits in with the retention seat (11).

2. The hemodialysis indwelling needle with a pipeline clamp according to claim 1, characterized in that: The first needle holding wing (31) extends toward one end away from the indwelling sleeve (12), and the side wall of the indwelling seat (11) is fixedly connected with a second needle holding wing (14), and the second needle holding wing (14) extends toward one end close to the indwelling sleeve (12).

3. The hemodialysis indwelling needle with a pipeline clamp according to claim 2, characterized in that: The end of the protective cap (3) close to the retention seat (11) is provided with a groove (32) which is plugged and matched with the retention seat (11); the protective cap (3) is provided with a slot (33) which penetrates the protective cap (3) on the bottom wall of the groove (32); the side wall of the needle seat (22) is fixedly connected with an insert block (221) which is plugged and matched with the slot (33); and the inner wall of the retention seat (11) is fixedly connected with a side strip (111); When the insert block (221) is plugged into the slot (33), the needle seat (22) is tightly pressed against the side strip (111).

4. The hemodialysis indwelling needle with a pipeline clamp according to claim 3, characterized in that: The embedding structure comprises an embedding groove (34) provided at one end of the protective cap (3) away from the groove (32), and the retention seat (11) is interference-fitted with the embedding groove (34).

5. The hemodialysis indwelling needle with a pipeline clamp according to claim 4, characterized in that: The plug block (221) and the side strip (111) are arranged opposite to each other relative to the axis of the needle seat (22); the side strip (111) is arranged to protrude from the end surface of the retention seat (11); a sidewall of the groove (32) is provided with an avoidance groove (35) which is plugged and matched with the protruding portion of the side strip (111); and the side strip (111) is plugged and matched with the slot (33).

6. The hemodialysis indwelling needle with a pipeline clamp according to claim 5, characterized in that: The free end of the insert block (221) extends to protrude from the bottom wall of the embedding groove (34), and when the first needle holding wing (31) is aligned with the second needle holding wing (14), the protruding portion of the side strip (111) is aligned with the slot (33).

7. The hemodialysis indwelling needle with a pipeline clamp according to claim 1, characterized in that: The pipe connecting assembly comprises a catheter (41) connected to the side wall of the retention seat (11), a tube clamp (42) arranged on the catheter (41), and a heparin cap (43) arranged at the free end of the catheter (41).

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