CN210019360U - Adjustable blood taking needle - Google Patents

Abstract

The utility model discloses an adjustable blood collection needle, which comprises an outer casing, a baffle plate and a blood sampling needle main body. A baffle plate is arranged at both ends inside the outer casing, and the bottom of the opposite end of the baffle plate is connected by a connecting plate, so the The top end of the outer casing is provided with a pressing head, and both sides of the bottom end of the pressing head are provided with elastic splints, the middle of the bottom end of the pressing head is provided with a blood collection needle body through a second spring, and a telescopic splint is slidably arranged between the connecting plates. A first spring is provided on one side of the opposite end of the connecting plate, a support rod is provided on one side of the telescopic head, and the support rod extends to the outer side of the outer casing and is provided with a slider, and the inner side wall of the outer casing is provided with a sliding block. Limiting teeth are evenly arranged on the upper part, a limiting block is arranged on the side of the support rod close to the limiting teeth, and a sealing cover is arranged at the bottom end of the outer casing. The utility model is convenient for adjusting the depth of the needles pierced into the skin, has strong applicability, and some parts can be recycled, which is more hygienic.

Description

An adjustable lancet

technical field

The utility model relates to the technical field of medical devices, in particular to an adjustable blood collection needle.

Background technique

At present, the blood glucose of finger blood is generally measured clinically through a disposable blood collection needle. The disposable micro-pain blood collection needle mainly pierces the capillaries at the end of the finger to obtain blood samples. Its main principle is to use the elastic properties of the spring to quickly puncture the needle Blood collection, because the speed is very fast, and the needle is very thin, so the person being collected is slightly or no pain;

However, the existing blood collection needles generally have the following problems:

1. The length of the blood collection needle is fixed, and the depth of penetration into the skin cannot be adjusted. Compared with patients with thin skin, the penetration depth is deeper, resulting in excessive bleeding. Compared with patients with thick skin, the penetration depth is shallower and bleeding is excessive. Little or no piercing of the skin, resulting in insufficient blood collection and inability to measure;

2. Blood collection needles are generally disposable and discarded after use, which not only pollutes the environment, but also causes waste of resources;

3. The top of the blood collection needle is only provided with a sealing cover to prevent dust, and the protection is weak, which is easy to breed bacteria.

Utility model content

The purpose of the present utility model is to provide an adjustable blood collection needle, so as to solve the problems in the above-mentioned background art that the length cannot be adjusted, the environment is polluted after use, wastes resources and easily breeds bacteria.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an adjustable lancet, comprising an outer casing, a baffle and a main body of the lancet, both ends inside the outer casing are provided with baffles, and the opposite end of the baffle is provided The bottom is connected by a connecting plate, the top end of the outer casing is provided with a pressing head, and both sides of the bottom end of the pressing head are provided with elastic splints extending to the inside of the outer casing, and the middle of the bottom end of the pressing head is provided with a second spring. The main body of the blood collection needle, and the main body of the blood collection needle includes a needle head, a fixed seat, a second slide rail and a limit skirt, the bottom end of the fixed seat is movably provided with a needle head, and the middle of both ends of the fixed seat is provided with a second slide rail , the bottom end of the fixed seat is provided with a limiting skirt, the opposite side of the baffle is provided with a first chute, the opposite side of the connecting plate is provided with a first sliding rail, and the connecting plate is provided with a first sliding rail. A telescopic head is slidably arranged therebetween, and a first spring is disposed on the opposite end of the connecting plate through a support plate, and the bottom ends of the first springs are fixedly connected to the top of the telescopic head, and the middle of the telescopic head is arranged in the middle There is a through hole, a second chute is provided on one side of the connecting plate and the outer shell, a support rod is provided on one side of the telescopic head, and the support rod extends through the second chute to the outer side of the outer shell. There is a slider, the inner side wall of the outer shell is evenly provided with limit teeth, the side of the support rod close to the limit teeth is provided with a limit block that matches the slider, and the bottom end of the outer shell is provided with a limiter. The sealing cover is provided with a sterile cotton cloth at the bottom end inside the sealing cover.

Preferably, the bottom end of the elastic splint is provided with hooks, and the distance between the hooks at the initial position of the elastic splint is less than the length of the limiting skirt.

Preferably, the middle parts of both sides of the baffle are obliquely provided with oblique edges, and the hooks at the bottom end of the elastic splint are slidably connected to the oblique edges of the baffle.

Preferably, both sides of the telescopic head are provided with sliding grooves matching the first sliding rails, and the first sliding rails form a sliding structure inside the sliding grooves.

Preferably, the support rod is a Z-shaped structure, the opposite ends of the limiting teeth and the limiting block are provided with oblique edges, and the oblique edges are parallel to each other, and the number of the limiting teeth is set to four.

Preferably, a threaded hole is provided inside the fixing seat, a protruding portion is provided on the top end of the needle, and the protruding portion is threadedly connected with the threaded hole, the needle tip of the needle is conical, and the second spring has a The bottom end is fixedly connected with the top end of the fixing seat.

Preferably, the second sliding rail is matched with the first sliding groove, and the second sliding rail forms a sliding structure inside the first sliding groove

Compared with the prior art, the beneficial effect of the utility model is: the adjustable blood collection needle

1. A telescopic head is movably arranged in the middle of the connecting plate through the slide rail, and a through hole is arranged in the middle of the telescopic head, the needle of the blood collection needle can pass through the through hole, and the opposite side of the connecting plate is provided with a first through the supporting plate. A spring, and the bottom end of the first spring is fixedly connected with the top end of the telescopic head, one side of the telescopic head is provided with a support rod extending to the outside of the outer casing, and the output end of the supporting rod is provided with a slider, and the inner side wall of the outer casing is provided with a slider. The limit teeth are evenly arranged, and one end of the support rod is provided with a limit block matching the limit teeth. By sliding the slider up and down, the telescopic head is driven to slide up and down, and the telescopic head is fixed by the limit teeth and limit blocks. Adjust the length of the telescopic head protruding from the outer casing as required, so that the length of the blood collection needle inserted into the finger can be adjusted according to the user population, and the applicability is strong;

2. The adjustable blood collection needle is configured by setting the main body of the blood collection needle as a fixed seat and a needle head, and the needle head and the fixed seat are threadedly connected, and the shell of the blood collection needle can be recycled later, and only the needle head needs to be replaced, reducing waste of resources;

3. The adjustable blood collection needle is provided with a sterile cotton cloth inside the sealing cover, which can resist the through hole of the telescopic head, has a good dustproof effect, and can avoid the breeding of bacteria, which is more hygienic.

Description of drawings

Fig. 1 is the front cross-sectional structural schematic diagram of the utility model in the storage state;

Fig. 2 is the front sectional structure schematic diagram of the utility model in the unfolded state;

Fig. 3 is the partial side sectional structure schematic diagram of the utility model;

4 is a schematic diagram of the front structure of the main body of the blood collection needle of the present invention.

In the figure: 1. Outer body; 2. Elastic splint; 3. Baffle plate; 4. First slide rail; 5. First spring; 6. Sealing cover; 7. Sterilizing cotton cloth; 8. Telescopic head; ;10, support rod; 11, limit tooth; 12, slider; 13, limit block; 14, connecting plate; 15, blood collection needle body; 1501, needle; 1502, fixed seat; 1503, second slide rail; 1504, the limit skirt; 16, the second spring; 17, the pressing head; 18, the first chute; 19, the second chute.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1-4 , an embodiment provided by the present invention: an adjustable blood collection needle, comprising an outer casing 1 , a baffle 3 and a lancet main body 15 , and baffles are provided at both ends inside the outer casing 1 3, and the bottom of the opposite end of the baffle 3 is connected by the connecting plate 14, the top of the outer casing 1 is provided with a pressing head 17, and both sides of the bottom end of the pressing head 17 are provided with elastic splints 2 extending to the inside of the outer casing 1, pressing The middle of the bottom end of the head 17 is provided with a blood collection needle body 15 through a second spring 16, and the blood collection needle body 15 includes a needle head 1501, a fixing seat 1502, a second sliding rail 1503 and a limit skirt 1504, and the bottom end of the fixing seat 1502 is movably arranged There is a needle 1501, a second slide rail 1503 is arranged in the middle of both ends of the fixing seat 1502, a threaded hole is arranged inside the fixing seat 1502, and a protruding part is provided at the top of the needle 1501, and the protruding part is threadedly connected with the threaded hole for blood collection. After completion, the needle 1501 can be replaced, and the rest can be recycled. The needle tip of the needle 1501 is tapered, which is convenient for inserting the needle 1501 into the skin. Under the action of the second spring 16, the lancet body 15 is ejected;

The bottom end of the fixing seat 1502 is provided with a limiting skirt 1504, the bottom end of the elastic splint 2 is provided with hooks, and the distance between the hooks at the initial position of the elastic splint 2 is less than the length of the limiting skirt 1504, so the The limit skirt 1504 is clamped;

The middle parts of both sides of the baffle plate 3 are obliquely provided with a hypotenuse, and the hook at the bottom end of the elastic splint 2 is slidably connected with the hypotenuse of the baffle plate 3, so that the hook at the bottom end of the elastic splint 2 slides back and forth on the hypotenuse, and adjusts the angle between the hooks. the distance between;

The opposite side of the baffle 3 is provided with a first chute 18, the second slide 1503 matches the first chute 18, and the second slide 1503 forms a sliding structure inside the first chute 18, allowing blood collection The needle body 15 can slide up and down stably;

A first sliding rail 4 is provided on the opposite side of the connecting plate 14, a telescopic head 8 is slidably arranged between the connecting plates 14, and both sides of the telescopic head 8 are provided with sliding grooves matching the first sliding rail 4, and The first sliding rail 4 forms a sliding structure inside the sliding groove, so that the telescopic head 8 can stably slide inside the outer casing 1;

The side of the opposite end of the connecting plate 14 is provided with a first spring 5 through a support plate, and the bottom end of the first spring 5 is fixedly connected with the top end of the telescopic head 8, and a through hole 9 is arranged in the middle of the telescopic head 8, and the connecting plate 14 and one side of the outer shell 1 are provided with a second chute 19, one side of the telescopic head 8 is provided with a support rod 10, and the support rod 10 extends through the second chute 19 to the outer side of the outer shell 1 is provided with a slide. Block 12, limit teeth 11 are evenly arranged on the inner side wall of the outer casing 1, a limit block 13 matching the slider 12 is provided on the side of the support rod 10 close to the limit teeth 11, and the support rod 10 is a Z-shaped structure, The opposite end of the limit tooth 11 and the limit block 13 is provided with a hypotenuse, and the hypotenuses are parallel to each other, which is convenient for the support rod 10 to slide downward, and can play a fixed role when it stops sliding. There are four, adjust the appropriate gear according to the needs, and the applicability is strong;

The bottom end of the outer casing 1 is provided with a sealing cover 6 , and the inner bottom end of the sealing cover 6 is provided with a sterile cotton cloth 7 .

Working principle: When using, first unplug the sealing cover 6, adjust the extension length of the telescopic head 8 according to the thickness of the patient's skin to be blood collection, there are four gears in total, slide the slider 12 down, and adjust to the appropriate gear, Release the slider 12, the limit block 13 is pressed against the limit tooth 11, under the pulling force of the first spring 5, the telescopic head 8 is fixed, and then the through hole 9 on the telescopic head 8 is pressed against the patient's finger for blood collection Press down the pressing head 17, and the hooks at the bottom end of the elastic splint 2 slide down on the oblique edges on both sides of the baffle 3, so that the distance between the bottom ends of the elastic splint 2 on both sides of the bottom end of the pressing head 17 increases, and the elasticity The splint 2 loses its grip on the limiting skirt 1504, and the blood collection needle body 15 pops down quickly under the action of the second spring 16, and the needle 1501 penetrates the through hole 9 and pierces the patient's finger to complete blood collection, and then in the first step. Under the action of the two springs 16, the needle 1501 is retracted into the outer casing 1, and the needle 1501 is threadedly connected to the fixing seat 1502. The needle 1501 can be replaced, and the rest can be recycled.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (7)

1. An adjustable lancet, comprising an outer casing (1), a baffle plate (3) and a lancet body (15), characterized in that: both ends inside the outer casing (1) are provided with baffle plates ( 3), and the bottom of the opposite end of the baffle plate (3) is connected by a connecting plate (14), the top of the outer casing (1) is provided with a pressing head (17), and both sides of the bottom end of the pressing head (17) are provided with The elastic splint (2) extends to the inside of the outer casing (1), the middle of the bottom end of the pressing head (17) is provided with a lancet body (15) through a second spring (16), and the lancet body (15) includes A needle head (1501), a fixed seat (1502), a second slide rail (1503) and a limit skirt (1504), the bottom end of the fixed seat (1502) is movably provided with a needle head (1501), the fixed seat (1502) 1502) The middle of both ends is provided with a second slide rail (1503), the bottom end of the fixing seat (1502) is provided with a limiting skirt (1504), and the opposite side of the baffle plate (3) is provided with a second slide rail (1503). A sliding groove (18), a first sliding rail (4) is provided on the opposite side of the connecting plate (14), and a telescopic head (8) is slidably arranged between the connecting plates (14). A first spring (5) is provided on one side of the opposite end of the plate (14) through the support plate, and the bottom ends of the first springs (5) are fixedly connected with the top end of the telescopic head (8), and the telescopic head (8) A through hole (9) is provided in the middle of the interior, a second chute (19) is provided on one side of the connecting plate (14) and the outer casing (1), and one side of the telescopic head (8) is provided with a second chute (19). A support rod (10) is provided, and the support rod (10) extends through the second chute (19) to the outer side of the outer casing (1), a slider (12) is provided, and the inner side wall of the outer casing (1) is evenly distributed A limit tooth (11) is provided, a limit block (13) matching the slider (12) is provided on the side of the support rod (10) close to the limit tooth (11), and the outer casing (1) A sealing cover (6) is arranged at the bottom end of the sealing cover (6), and a sterile cotton cloth (7) is arranged at the inner bottom end of the sealing cover (6). 2. An adjustable blood collection needle according to claim 1, characterized in that: the bottom end of the elastic splint (2) is provided with a hook, and between the hooks when the elastic splint (2) is in the starting position The distance is less than the length of the limit skirt (1504). 3. An adjustable blood collection needle according to claim 2, characterized in that: the middle part of both sides of the baffle plate (3) is obliquely provided with a hypotenuse, and the hook at the bottom end of the elastic splint (2) and the baffle plate (3) The hypotenuse sliding connection. 4. An adjustable blood collection needle according to claim 1, characterized in that: both sides of the telescopic head (8) are provided with a chute matching the first slide rail (4), and the first The sliding rail (4) forms a sliding structure inside the sliding groove. 5. An adjustable blood collection needle according to claim 1, characterized in that: the support rod (10) is a Z-shaped structure, and the limit tooth (11) is opposite to the limit block (13). Both are provided with oblique sides, and the oblique sides are parallel to each other, and the number of limit teeth (11) is set to four. 6. An adjustable blood collection needle according to claim 1, characterized in that: the fixing seat (1502) is provided with a threaded hole inside, and the top end of the needle (1501) is provided with a protruding part, and the protruding part is The outgoing portion is threadedly connected with the threaded hole, the needle tip of the needle head (1501) is conical, and the bottom end of the second spring (16) is fixedly connected with the top end of the fixing seat (1502). 7. An adjustable blood collection needle according to claim 1, characterized in that: the second sliding rail (1503) is matched with the first sliding groove (18), and the second sliding rail (1503) is in the second sliding rail (1503). The interior of a chute (18) constitutes a sliding structure.

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