Anti-seepage alarm puncture needle for hemodialysis patient

Abstract

The invention relates to the technical field of nursing puncture safety, in particular to an anti-seepage alarm puncture needle for a hemodialysis patient, which comprises a needle head part, a needle seat, a tube body, a control clamp, a plugging block, a sealing cover body, a buckling seat, a fine adjustment screw head and an errhysis alarm, the needle head part is arranged at the front part of the needle seat, and a needle handle is sleeved on the outer side of the needle seat; the rear end of the needle seat is in butt joint with a pipe body, the pipe body is provided with a control clamp used for flow control, the needle head portion is sleeved with a plugging block, the buckling seat is buckled to the front portion of the needle seat, the fine adjustment screw head is installed on the buckling seat in a screwed mode, and the front end of the fine adjustment screw head is connected with a sleeve spring. And the sealing cover body is mounted at the front part of the buckling seat through a sleeve spring. The adopted needle body plugging block structure can achieve a large-distance follow-up process through the sleeve spring structure on the rear portion in the needle inserting process, and it is guaranteed that the phenomenon of errhysis is avoided in the needle inserting process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of puncture safety care, in particular to a blood dialysis patient use anti-leakage type alarm puncture needle. BACKGROUND

[0002] As a common blood purification method, blood dialysis is mainly used for removing metabolic waste and toxicants in blood, and adjusting electrolyte and acid-base balance. With the deepening of medical technology research on the pathological characteristics of patients with uremia, diabetes and other related diseases, blood dialysis has improved the life quality of more and more related patients, and greatly prolonged the life of patients with chronic renal failure. As a common nursing operation, arteriovenous fistula puncture is widely used in the treatment process of most blood dialysis patients. However, due to the need for frequent puncture, it is easy to cause damage, relaxation and even necrosis of skin tissue, which seriously affects the puncture effect. Moreover, due to poor puncture conditions, high puncture bleeding rate is easily caused, which affects the treatment effect. Therefore, there is an urgent need for a blood dialysis patient use anti-leakage type alarm puncture needle with bleeding plugging function and bleeding alarm function. SUMMARY

[0003] The technical problem to be solved by the present application is to solve the deficiencies of the prior art, and to provide a blood dialysis patient use anti-leakage type alarm puncture needle for preventing puncture bleeding of blood dialysis patients due to frequent puncture, and realizing early warning through sensing preposition to avoid the problem of not timely finding in the case of serious bleeding.

[0004] The technical problem to be solved by the present application is solved by the following technical scheme, a blood dialysis patient use anti-leakage type alarm puncture needle, comprising a needle head, a needle seat, a pipe body, a control clamp, a plugging block, a closed cover, a buckle seat, a fine adjustment screw head and a bleeding alarm, the needle head is arranged at the front of the needle seat, the needle seat is sleeved with a needle handle outside, the rear end of the needle seat is connected with the pipe body, the pipe body is provided with a control clamp for flow control, the needle head is sleeved with a plugging block, the buckle seat is buckled at the front of the needle seat, the fine adjustment screw head is screw-mounted on the buckle seat, the front end of the fine adjustment screw head is connected with a sleeve spring, the closed cover is mounted on the front of the buckle seat through the sleeve spring, the closed cover is sleeved outside the needle head and is flexibly connected with the plugging block, the sensing end of the bleeding alarm is mounted on the buckle seat, and the bleeding alarm is connected with the sensing end on the buckle seat through a lead wire.

[0005] Further, the plugging block is a cylindrical silica gel block, a through hole for accommodating the needle body is arranged in the middle of the plugging block, a bevel for contacting the plugging puncture part is arranged on the front end face of the plugging block, the bevel is a smooth transition contact surface, and a columnar pressure relief hole is arranged on the rear end face of the plugging block parallel to the central axis.

[0006] Further, the cross section of the buckle seat is funnel-shaped, the buckle seat comprises a wide tube part, a narrow tube part and an inclined taper part, a rubber sleeve is embedded in the inner side of the wide tube part, the wide tube part is fixedly buckled on the needle seat through the rubber sleeve, the narrow tube part coaxially surrounds the outside of the needle body to form a flow space, and the inclined taper part is embedded with a detection device, and the detection device comprises a capacitive sensing element.

[0007] Further, a threaded segment is arranged on the outside of the narrow tube part, the fine adjustment screw head is screw-connected with the threaded segment, and the length of the threaded segment is determined according to the range of puncture depth.

[0008] Further, the closed cover body comprises a transparent capsule cover, a cover ring and a cover cap, the transparent capsule cover is fixed on the front part of the outer periphery of the cover cap, the transparent capsule cover is a wrinkled conical rubber capsule body, and the hard cover ring for attaching the skin is connected to the outer end of the transparent capsule cover.

[0009] Further, a cover spring is connected to the rear end of the cover cap, a cover joint part is arranged at the center of the cover cap, and the cover joint part is annularly arranged with leakage grooves for accommodating overflow blood.

[0010] Further, the transparent capsule cover is fixed on the front part of the outer periphery of the cover cap, the transparent capsule cover is a wrinkled conical rubber capsule body, and the hard cover ring for attaching the skin is connected to the outer end of the transparent capsule cover.

[0011] Further, the lead wire front segment is fixedly buckled at the needle handle, the blood leakage alarm device comprises a power supply module, an alarm lamp unit and a signal triggering unit, the alarm lamp unit is used for directly emitting a flashing alarm signal in situ when blood leakage is detected, and the signal triggering unit is used for synchronizing alarm information at the nurse end.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] The needle body plugging block structure adopted in the present application can realize a large distance follow-up process through the rear cover spring structure during the needle insertion process, so as to avoid blood leakage during the needle insertion process; and through the umbrella cover capsule structure of the front part, not only the contact pressure of the puncture part after the needle insertion can be self-adaptively adjusted, but also accidental blood leakage can be effectively collected, so as to facilitate the blood leakage collection alarm; the blood leakage alarm device arranged in the present application can pre-position the alarm, cooperate with the collection and drainage structure of the front end, form a reliable channel, and thus can be immediately sensed in the early stage of blood leakage. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the overall structure front view of embodiment 1 of the present application;

[0015] Figure 2 is the overall structure front view of embodiment 1 of the present application;Figure 1 Partial structure of the front of the needle hub 2, top view;

[0016] Figure 3 is a side view of the right end of the cover 63 of the present application;

[0017] Figure 4 is a vertical sectional view of the present application showing the blocking block 5 and the needle head 5 in a sleeved connection;

[0018] Figure 5 is a side view of the inside of the present application showing the buckle seat 7;

[0019] 1-needle head, 2-needle hub, 21-needle handle, 3-tube body, 4-control clamp, 5-blocking block, 51-pressure release hole, 6-closed cover body, 61-transparent capsule cover, 611-sticker, 612-stay, 62-cover ring, 63-cover, 631-sleeved part, 631a-leakage groove, 7-buckle seat, 71-flow guide convex strip, 72-capacitive electrode sheet, 8-fine adjustment screw head, 81-sleeved spring, 9-bleeding alarm, 91-detection device. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0021] The drawings of the embodiment 1 of the present application are shown in the following: Figures 1-5As shown, the present application discloses a kind of anti-seepage type alarm puncture needle for hemodialysis patients, including needle head 1, needle seat 2, pipe body 3, control clamp 4, blocking block 5, closed cover body 6, buckle joint seat 7, fine adjustment screw head 8 and seepage alarm 9, the needle head 1 is located in the front of needle seat 2, the needle handle 21 of needle seat 2 outside is equipped, the rear end of needle seat 2 is butt joint with pipe body 3, pipe body 3 is equipped with control clamp 4 for flow control, the needle head 1 is equipped with blocking block 5, which is cylindrical silica gel block, the middle part of blocking block 5 is provided with through hole for accommodating needle body, the front end surface of blocking block 5 is provided with inclined plane for contacting blocking puncture site, the inclined plane is smooth transition contact surface, the rear end surface of blocking block 5 is provided with columnar pressure relief hole 51 parallel to central axis, the pressure relief hole 51 can be cylindrical hole body, other easily formed processing shape can also be selected.In the specific working process of blocking block 5, when the rear end of blocking block 5 is extruded, due to the elastic change of material inside, the inclined end face of front part will change from plane to certain radian curved surface, so as to form better pressure surface at needle hole between needle body and skin, prevent seepage effect, especially for patients with poor skin condition and poor puncture condition, through the above adjustment, not only direct blocking pressure control can be realized, but also micro-control process of blocking surface form change can be realized.

[0022] The buckle joint seat 7 is buckled in the front of the needle seat 2, the fine adjustment screw head 8 is screw-mounted on the buckle joint seat 7, the front end of the fine adjustment screw head 8 is connected with the sleeve spring 81, the closed cover body 6 is installed on the front of the buckle joint seat 7 through the sleeve spring 81, the closed cover body 6 is sleeved on the outside of the needle head 1 and forms flexible connection with the blocking block 5, the sensing end of the seepage alarm 9 is installed on the buckle joint seat 7, and the seepage alarm 9 is connected with the sensing end on the buckle joint seat 7 through wires.Specifically, the cross section of the buckle joint seat 7 is funnel-shaped, the buckle joint seat 7 includes wide tube part, narrow tube part and inclined cone part, the inside of the wide tube part is embedded with rubber sleeve, and the rubber sleeve can be fixed on the front of the needle seat 2 by elastic extrusion to form support.The outside of the narrow tube part is provided with threaded segment, the fine adjustment screw head 8 is screw-connected with the threaded segment, and the length of the threaded segment is determined according to the puncture depth range.In the specific puncture depth range setting process, for the condition of each patient, the puncture site is different, after determining the puncture depth according to actual condition, the fine adjustment screw head 8 is rotated to the specified position of threaded end, and overall depth positioning is realized.

[0023] The closure cover 6 comprises a transparent capsule cover 61, a cover ring 62 and a cover cap 63, the front outer periphery of the cover cap 63 is fixed with the transparent capsule cover 61, the transparent capsule cover 61 is a pleated type conical rubber capsule body, the outer end of the transparent capsule cover 61 is connected with the hard cover ring 62 for attaching the skin. The rear end of the cover cap 63 is connected with a cover spring 81, and the elastic force thereof is smaller than that of the transparent capsule cover 61, the center of the cover cap 63 is provided with a cover joint part 631, the cover joint part 631 is annularly arranged with a leakage groove 631a for accommodating the overflow blood, the front two sides of the cover cap 63 are symmetrically connected with a sticking strip 611, the sticking strip 611 is attached and installed on the inner side of the transparent capsule cover 61, the outer end of the sticking strip 611 is provided with a connecting lug, the sticking strip 611 is bolted with a supporting strip 612 through the connecting lug, the two ends of the supporting strip 612 are provided with connecting lugs, the sticking strip 611 is bolted with the rear end of the blocking block 5 through the supporting strip 612, when the two supporting strips 612 are located on the same straight line, the maximum extrusion is formed on the blocking block 5, and at this time, the transverse plugging force does not continue to increase due to the connecting rod movement, thereby forming the pressure protection effect on the puncture port. If the front blocking block 5 cannot effectively block under the accidental condition, a certain bleeding occurs at the puncture site, the bleeding will flow along the needle body to the center of the cover cap 63, and then flow out through the leakage groove 631a, and finally flow into the narrow tube part of the buckle seat 7, and be sensed by the sensor of the inclined conical part, so that the bleeding signal is found. The above structure can be integrally manufactured in advance, and then directly sleeved on the needle seat 2 for use, without on-site assembly, including the blocking block 5, the closure cover 6, the fine adjustment screw head 8 and the buckle seat 7, which are connected in sequence through the corresponding parts.

[0024] The wide tube part of the buckle seat 7 is fixedly buckled on the needle seat 2 through a rubber sleeve, the narrow tube part coaxially surrounds the outside of the needle body to form a flow space, the inclined conical part is embedded with a detection device 91, and the detection device 91 comprises a capacitive sensing element. The front end of the wire is fixedly bolted at the needle handle 21, the bleeding alarm 9 comprises a power supply module, an alarm lamp unit and a signal triggering unit, the alarm lamp unit is used for directly issuing a flashing alarm signal in situ when the bleeding flow is detected, and the signal triggering unit is used for synchronizing the alarm information at the nurse end. Specifically, the detection device 91 connected with the bleeding alarm 9 can comprise a micro capacitive electrode sheet 72, which is inserted into the inner side wall of the inclined conical part, and the inner side wall thereof can further be provided with a flow guide protrusion 71 at the upper part, so as to realize reliable collection of blood and prevent the occurrence of missed detection phenomenon, the blood flows into the capacitive electrode sheet 72 after being guided, the dielectric constant changes, the change signal is detected, and finally the alarm signal is issued through the external bleeding alarm 9.

[0025] In the actual puncture process, the nursing staff selects the position of the arteriovenous of the patient, usually punctures at a certain needle insertion angle, and in the initial stage of needle insertion, the blocking block 5 does not contact the skin needle eye, and as the needle continues to penetrate, the blocking block 5 gradually approaches, when the blocking block 5 contacts the skin needle eye, the front spring 81 is directly compressed, and in the slow needle insertion follow-up process, the blocking block 5 always blocks the front end, and as the pressure resistance of the front spring 81 increases, the support strip 612 will gradually support the paste strip 611, drive the transparent capsule cover 61 to elastically expand, the rear part of the blocking block 5 is also extruded, the front part of the blocking block 5 forms an arc-shaped blocking surface, forms effective blocking, and since the cover ring 62 is a hard ring that will be buckled on the skin to form a certain closed space, but due to the existence of the leakage groove 631a, it will not form complete sealing, and will not cause damage to the puncture port due to air pressure. In special cases, blood will not flow out, but will flow to the sensing element along the needle body outer wall through a special channel.

[0026] The technical scheme of embodiment 2 of the application adopts the front part of the needle body to be provided with the blocking block 5, the needle seat 2 is provided with the buckling seat 7, a soft spring structure of a certain length is sleeved on the needle body between the buckling seat 7 and the blocking block 5, the both ends of the spring are free, the front part of the buckling seat 7 is provided with the limiting block, the limiting block includes a plurality of opening type buckling blocks with different length parameters, and in actual use, the nursing staff can select the buckling block according to the puncture depth, and the buckling block is clamped on the outside from the side of the needle body, so that axial limiting is formed, and the limiting can be adjusted according to the actual use scene. The spring at the front part is used for follow-up blocking in the latter stage of puncture, and provides a certain static blood seepage blocking pressure. Those skilled in the art can also obtain other specific embodiment schemes according to the above enlightenment, which will not be listed one by one here.

[0027] The above only describes the preferred embodiments of the application and is not used to limit the application. For those skilled in the art, the application can have various changes and variations. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A leakproof alarm puncture needle for hemodialysis patients, characterized by: The device comprises a needle part, a needle holder, a tube, a control clamp, a blocking block, a closed cover, a buckle seat, a fine adjustment screw head and a bleeding alarm, the needle part is arranged at the front of the needle holder, the needle holder is sleeved with a needle handle outside, the rear end of the needle holder is connected with the tube, the tube is installed with the control clamp for flow control, the needle part is sleeved with the blocking block, the buckle seat is buckled at the front of the needle holder, the fine adjustment screw head is screw-mounted on the buckle seat, the front end of the fine adjustment screw head is connected with a sleeve spring, the closed cover is installed on the front of the buckle seat through the sleeve spring, the closed cover is sleeved outside the needle part and is flexibly connected with the blocking block, the sensing end of the bleeding alarm is installed on the buckle seat, and the bleeding alarm is connected with the sensing end on the buckle seat through a wire.

2. The anti-leakage alert puncture needle for hemodialysis patients according to claim 1, characterized in that: The blocking block is a cylindrical silica gel block, a through hole for accommodating the needle is arranged in the middle of the blocking block, a bevel for contacting the puncture site is arranged on the front end face of the blocking block, the bevel is a smooth transition contact surface, and a cylindrical pressure relief hole is arranged on the rear end face of the blocking block parallel to the central axis.

3. The anti-leakage alert puncture needle for hemodialysis patients according to claim 1, characterized in that: The cross section of the buckle seat is funnel-shaped, the buckle seat comprises a wide tube part, a narrow tube part and an inclined taper part, a rubber sleeve is embedded on the inner side of the wide tube part, the wide tube part is fixedly buckled on the needle holder through the rubber sleeve, the narrow tube part is coaxially arranged outside the needle to form a flow space, and a detection device is embedded in the inclined taper part.

4. The leak-resistant alarm puncture needle for hemodialysis patients according to claim 3, characterized in that: A threaded segment is arranged outside the narrow tube part, the fine adjustment screw head is screw-connected with the threaded segment, and the length of the threaded segment is determined according to the puncture depth interval.

5. The leak-resistant alarm puncture needle for hemodialysis patients according to claim 1, characterized in that: The closed cover comprises a transparent capsule cover, a cover ring and a cover cap, the transparent capsule cover is fixed on the front of the cover cap, the transparent capsule cover is a wrinkled conical rubber capsule, and the outer end of the transparent capsule cover is connected with a hard cover ring for attaching to the skin.

6. The leak-resistant alarm piercing needle for hemodialysis patients according to claim 5, characterized in that: A sleeve spring is connected to the rear end of the cover cap, a sleeve joint part is arranged at the center of the cover cap, and the sleeve joint part is annularly arranged with a leakage groove for accommodating overflow blood.

7. The leak-resistant alarm puncture needle for hemodialysis patients according to claim 5, characterized in that: Symmetrical adhesive strips are connected to the front of the cover cap, the adhesive strips are attached and installed on the inner side of the transparent capsule cover, connecting ears are arranged at the outer end of the adhesive strips, the adhesive strips are bolted with a supporting strip through the connecting ears, the supporting strip is provided with connecting ears at both ends, and the adhesive strips are bolted with the rear end of the blocking block through the supporting strip.

8. The leak-resistant alarm piercing needle for hemodialysis patients according to claim 1, wherein: The front segment of the wire is fixedly bolted at the needle handle, the bleeding alarm comprises a power supply module, an alarm lamp unit and a signal triggering unit, the alarm lamp unit is used for directly emitting a flashing alarm signal in situ when bleeding is detected, and the signal triggering unit is used for synchronizing the alarm information at the nurse end.

Images