WO2015176644A1

WO2015176644A1 - Ejection-type lancing device structure

Info

Publication number: WO2015176644A1
Application number: PCT/CN2015/079276
Authority: WO
Inventors: 胡绍勤
Original assignee: 胡绍勤
Priority date: 2014-05-21
Filing date: 2015-05-19
Publication date: 2015-11-26
Also published as: CN104856698B; CN108903953B; CN108903953A; CN104856699A; CN107072605A; CN107072605B; CN204654955U; CN104856699B; CN104856698A

Abstract

An automatically loaded ejection-type blood sampling device is used in the field of medical instruments. In the automatically loaded ejection-type blood sampling device, a blood sampling needle casing (1) with a blood sampling needle (8) provided therein is mounted on the top of a lancing device casing (1A). A hitting hammer (2A) is triggered by a restoring force of a compressed hammer striking spring (21A). During the mounting process of the blood sampling needle part, the blood sampling needle part only needs to slide along a guide rail and is thus mounted by one step. Therefore, automatic loading by means of triggering and automatic loading by means of ejection of the lancing device are realized, and one-button triggering and one-button ejection are realized when the blood sampling device is used. The blood sampling device is portable, and a user does not need to touch the blood sampling needle (8) when being removed, so the blood sampling device is safe and convenient to use. The safety-type blood sampling device has a simple structure and low fabrication cost, can be operated by one hand and/or used together with a matching lancing device according to different structures, and can effectively ensure the safety of blood sampling operation.

Description

Bombing type blood collection pen structure

Technical field

The invention relates to the field of medical instruments, in particular to a structure of a bomb-type blood collection pen.

Background technique

The current personal blood collection needles are all disposable. The simple one in the personal blood collection needle is a triangular iron piece or a fixed needle bar and a convenient needle bar fixing rod. There is no limit device, and the wound size caused by the patient is The depth is determined entirely by the proficiency and experience of the caregiver. The pain is strong, and some patients evade and give up the blood test because of fear, so that the clinician can not obtain the test results and only open the treatment plan based on personal experience, the rate of misdiagnosis is high, and the illness is delayed.

The personal blood collection needle is mostly a plastic film or a simple package with a cap. In the process of transporting, using, and discarding the blood collection needle, plastic film piercing or cap peeling may occur, and the outer layer may be exposed without causing the needle to be exposed. Or a third person, with strong pain, poor safety performance, and even blood-borne pollution.

However, such blood collection needles are still used in most medical institutions because of their low price.

Some personal blood collection needles can be used with the blood collection pen, but the individual blood collection needles need to be exposed during the installation and or disposal process. The exposure of the needle will accidentally injure the operator and the safety performance is poor. And the individual blood collection needle should be placed inside the blood collection pen. Some patients bring the blood into the blood collection pen due to the large amount of bleeding. The ejection and recovery parts of the blood collection pen cannot be replaced every time. It is also difficult to thoroughly clean the blood. A major hidden danger of pollution.

Nowadays, there is a safety type blood collection needle on the market. It is equipped with a limiting device and an outer protective layer. After the firing, the needle can be automatically retracted, and the safety performance is good. However, due to its complicated structure, multiple components, complicated manufacturing process and high price, it is difficult to popularize the procurement and use costs of hospitals. Therefore, only some key infectious disease prevention institutions or medical institutions with good economic conditions are in use.

At present, the mainstream portable blood collection pen on the market is mainly used as a launching device for blood collection needles, which can be reused, and the blood collection needles are used once. Because the pen of the blood collection pen will contaminate the patient's blood during the blood collection process, resulting in the spread of blood diseases, it is limited to the use of a person alone. The advantage of this type of blood collection pen is that it uses a large spring, has large elastic force, sufficient puncture strength, adjustable puncture depth, and can be reused, and the cost of single blood collection is low. However, it requires a complicated operation procedure such as screwing the tip, installing the blood collection needle before launching, picking up the blood collection needle protection cap, pulling the tail cap to activate the launch spring, releasing the spine after firing, discarding the blood collection needle after firing, and then rotating the tip. During the process of installing and discarding the blood collection needle, the operator may be accidentally injured due to the exposure of the needle, and the safety performance is poor, and the operation is cumbersome.

There is also a disposable safety blood collection device on the market, which can perform blood collection and puncture operation on the patient after picking up the protection rod or the protective cap, thereby avoiding the spread of blood diseases. Some products have a vertical puncture device, but the device uses a small spring, the elastic force is general, when the patient's skin is thicker, the puncture strength is insufficient, and the patient's pain is more obvious. Vertical penetrating devices are mostly wing-shaped or cross-shaped guide rails. They are only one stage, and there will be jitter during exercise. It is impossible to ensure that the needle tip is vertical when puncture and pulling out the skin, and the cost of single blood collection is high. Moreover, when the blood collection pen is replaced after the use of the blood collection pen, the operator needs to contact the blood collection needle, which poses a safety hazard.

Summary of the invention

In order to solve the above problems, the present invention provides a self-priming blood collection device which is simple in operation and safe in needle replacement.

The technical solution adopted by the present invention to solve the technical problem thereof is:

A bouncing type blood collection pen structure comprises a blood collection needle and a blood collection pen housing capable of installing a blood collection needle at one end, and a top device, a firing device and a needle removal device disposed in the blood collection pen housing, the firing device comprising a blood collection pen a hammer in the housing that can strike the tail of the blood collection needle or combined with the tail end of the blood collection needle and a hammer spring that connects the hammer. The blood collection needle includes a blood collection needle housing, a needle rod fixing rod located in the blood collection needle housing, and a needle rod fixed to the needle rod. The blood collection needle at the top of the fixed rod has a needle outlet at the top end of the blood collection needle housing, and the needle rod fixing rod is disposed away from the inside of the blood collection needle housing or has a connection point with a fragile mouth between the blood collection needle housing.

Further, as an improvement of the technical solution of the present invention, further, as an improvement of the technical solution of the present invention, a chute is disposed on both sides of the blood collection pen case, and the upper jaw device includes a hammer hook rod on both sides of the hammer and a captain sliding along the chute. The sliding bar and the two sides of the firing hammer are provided with a hammer hook locking baffle that can be inserted into the inner side of the hammer hook to realize the upper jaw.

Further, as an improvement of the technical solution of the present invention, a release pad which can be released by the slamming hammer is disposed inside the hook of the firing hammer, and a release button is arranged on the lancet housing, and the release button and the release pad are transmitted through the extension piece. Trigger signal.

Further, as an improvement of the technical solution of the present invention, the top end of the blood collection pen housing is provided with a locking hole, and the blood collection needle is fixed by being embedded in the locking hole through a locking protrusion provided at the tail end of the blood collection needle housing.

Further, as an improvement of the technical solution of the present invention, the needle removing device comprises a needle releasing spring accommodating chamber disposed at the tail of the blood lance pen housing, and the lancet housing is provided with a composite sliding rod whose tail end abuts against the top of the needle releasing spring accommodating chamber, and is compounded. The top end of the sliding rod extends to the tail end of the blood collection needle housing, and the needle releasing spring receiving chamber is provided with a needle releasing spring which abuts against the bottom of the needle removing spring receiving chamber and the bottom of the composite sliding rod.

Further, as an improvement of the technical solution of the present invention, the needle unloading device further comprises a needle release tab disposed on two sides of the middle portion of the blood collection pen housing, wherein the middle portion of the needle release tab is hinged on the blood collection pen housing, and the upper end of the needle release tab Located in the lancet housing against the locking projection, the lower end of the ejector pin is a needle ejector button that extends out of the lancet housing.

Further, as an improvement of the technical solution of the present invention, a firing chamber is disposed in the blood collection pen housing, and a top end of the blood collection pen housing is provided with a hammering mouth, and a top end of the firing chamber extends to the hammering port.

Further as an improvement of the technical solution of the present invention, the top end of the firing hammer is provided with a hammer head which can be connected to the tail end of the blood collection needle at the time of impact.

Further, as an improvement of the technical solution of the present invention, the firing chamber is provided with a limiting post that can block the hammer hook locking baffle.

Further, as an improvement of the technical solution of the present invention, the needle bar fixing rod is provided with a limiting device on both sides of the needle bar fixing rod, and the blood collecting needle housing is provided with a reset device that cooperates with the limiting device to reset the needle bar fixing rod.

Further as an improvement of the technical solution of the present invention, the resetting device is an elastic rod located in the lancet housing inclined to the bottom of the lancet housing or parallel to the bottom of the lancet housing.

Further, as an improvement of the technical solution of the present invention, the reset device is an elastic rod located in the lancet housing and inclined toward the needle exit side, and the elastic rod and the reset device are provided with hooks on both sides.

Further, as an improvement of the technical solution of the present invention, the reset device is a return spring located between the needle exit port and the limit device.

Further, as an improvement of the technical solution of the present invention, the resetting device comprises an elastic rod disposed on both sides of the needle bar fixing rod and opened to the side of the needle insertion port, and the blood collecting needle housing is provided with a inclined groove, and the inclined groove is along the blood collection needle housing. The middle part is gathered toward the side where the needle is located.

Further, as an improvement of the technical solution of the present invention, the blood collection needle housing is provided with a cut-off baffle on both sides of the needle outlet, and the maximum width of the top end of the needle rod fixing rod is larger than the maximum width of the needle outlet. Further, as an improvement of the technical solution of the present invention, a reset block is arranged on both sides of the needle rod fixing rod in the blood collection needle housing, and arc-shaped grooves are formed in each reset block, and both sides of the needle rod fixing rod are arranged to be reset at the needle rod fixing rod The protrusion of the arcuate groove may be caught, and the arcuate groove is provided with a notch capable of guiding the protrusion into the arcuate groove.

Further, as an improvement of the technical solution of the present invention, the end of the needle bar fixing rod is provided with a resetting clip, and the resetting clip is a symmetrical locking rod on both sides, and each of the locking rods is provided with a buckle facing the inner side.

Further, as an improvement of the technical solution of the present invention, the end of the needle bar fixing rod is provided with a resetting device, and the resetting device is a circular cover protruding from the tail end of the needle bar fixing rod, and the circular cover can be inserted into the top end of the blood collecting pen and pulled out with the blood collecting pen And reset.

Further, as an improvement of the technical solution of the present invention, the bottom of the blood collection needle housing is a needle seat, and the tail end of the needle rod fixing rod is fixed on the needle seat, and the needle seat is provided with a bending opening.

Further, as an improvement of the technical solution of the present invention, an extension arm matching the tail end of the blood collection needle housing is disposed at a tail end of the blood collection needle housing, and an upper jaw is provided in the extension arm, and at least one upper jaw position is disposed in the extension arm. .

Further, as an improvement of the technical solution of the present invention, the bottom opening of the extension arm is located at the tail end of the extension arm and is provided with a composite locker that is fixed with a composite locking hole on the blood collection pen.

Further as an improvement of the technical solution of the present invention, the composite locker is two bumps symmetrically disposed within the extension arm.

Further, as an improvement of the technical solution of the present invention, a blood collection needle housing fixing buckle is disposed on the outer side of the blood collection needle housing.

Further, as an improvement of the technical solution of the present invention, the tail end of the needle bar fixing rod is provided with a firing rod extending rearward.

Further, as an improvement of the technical solution of the present invention, the tail end of the needle bar fixing rod is provided with an outwardly extending support plate.

Further, as an improvement of the technical solution of the present invention, the lancet housing is provided with a moving rod guide rod for guiding the needle bar fixing rod to slide.

Further, as an improvement of the technical solution of the present invention, the blood collection needle housing is provided with a skin tensioner which can be expanded outward.

The invention has the beneficial effects that the blood collection needle housing with the blood collection needle is installed on the top of the blood collection pen housing, and the hammer is fired by the restoring force of the compressed hammer spring. During the installation of the blood collection needle, the blood collection needle can be installed in one step only by sliding the blood collection needle along the guide rail, so that the blood collection pen can automatically fire the upper jaw and automatically unload the upper jaw. When the blood collection device is used, one button can be fired and one button can be unloaded, which is easy to carry. When unloading, there is no need to manually touch the blood collection needle, and the safety performance is high and the use is simple. The safety type blood collection needle has the advantages of simple structure and low cost, and can meet the purpose of one-hand operation and the use of the matching blood collection pen with different structures, and can effectively Safe operation for blood collection.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings:

1 is a schematic view showing the entire structure of the embodiment of the present invention in an upper state;

2 is a schematic view showing the overall structure of the embodiment of the present invention in a fired state;

3 is a schematic view showing the overall structure of a blood collection pen according to an embodiment of the present invention;

4 is a schematic structural view of an upper jaw device in a blood collection pen according to an embodiment of the present invention;

Figure 5 is a schematic view showing the overall structure of a first embodiment of a blood collection needle according to the present invention;

Figure 6 is a schematic view showing the overall structure of a second embodiment of the blood collection needle of the present invention;

Figure 7 is a schematic view showing the overall structure of a third embodiment of the blood collection needle of the present invention;

Figure 8 is a schematic view showing the overall structure of a fourth embodiment of the blood collection needle of the present invention;

9 is a schematic view showing a process of making a blood collection needle according to an embodiment of the present invention;

Figure 10 is a schematic view showing the overall structure of a first embodiment of a blood collection needle used in conjunction with a blood collection pen according to the present invention;

Figure 11 is a schematic view showing the overall structure of a second embodiment of a blood collection needle used in conjunction with a blood collection pen according to the present invention;

12 is a schematic view showing the overall structure of a third embodiment of a blood collection needle used in conjunction with a blood collection pen according to the present invention;

Figure 13 is a schematic view showing the overall structure of a fourth embodiment of a blood collection needle used in conjunction with a blood collection pen according to the present invention;

Figure 14 is a schematic view showing the outer structure of a blood collection needle in the embodiment of the present invention.

detailed description

1 to 14, the present invention is a structure of a cartridge type blood collection pen, comprising a blood collection needle and a blood collection pen housing 1A on one end of which a blood collection needle can be mounted, and a top device, a firing device and a discharge device disposed in the blood collection pen housing 1A. The needle device includes a hammering hammer 2A disposed in the blood collection pen housing 1A and capable of striking the tail of the blood collection needle or combined with the tail end of the blood collection needle, and a hammer spring 21A connecting the firing hammer 2A, the blood collection needle including the blood collection needle housing 1 a needle bar fixing rod 2 located in the blood collection needle housing 1 and a blood collection needle 8 fixed to the top end of the needle rod fixing rod 2, the top end of the blood collection needle housing 1 is provided with a needle outlet 11, and the needle rod fixing rod 2 is separated from the blood collection needle A connection point having a frangible opening 12 is provided inside the needle housing 1 or between the lancet housing 1.

The self-priming spring-loading blood collection device mounts the blood collection needle housing 1 having a blood collection needle therein at the top end of the blood collection pen housing 1A, and by the restoring force of the compressed hammer spring 21A, the firing hammer 2A is used in the blood collection needle. During the installation process, the blood collection needle can be installed in one step only by sliding the blood collection needle along the guide rail, so that the blood collection pen can automatically fire the upper jaw and automatically unload the upper jaw. When the blood collection device is used, one button can be fired and one button can be unloaded, which is easy to carry and unload. When there is no need to touch the blood collection needle by hand, the safety performance is high and the use is simple. The safety type blood collection needle has the advantages of simple structure and low cost, and can meet the purpose of one-hand operation and the use of the matching blood collection pen with different structures, and can effectively ensure safety. Blood collection operation.

As a preferred embodiment of the present invention, the firing hammer hook 3A and the upper sliding rod 31A are integrally connected by a connecting rod at the bottom to form a composite sliding rod, so that the operation is smoother, and the firing hammer hook 3A and the upper sliding rod 31A can also be Separate settings are made separately to complete the related functions. As a preferred embodiment of the present invention, a release paddle 4A for releasing the firing hammer 2A is disposed inside the firing hammer hook 3A. The blood collection pen housing 1A is provided with a release button, and the release button and the release pad 4A pass through. The extension piece transmits a release trigger signal.

As a preferred embodiment of the present invention, the top end of the blood collection pen housing 1A is provided with a locking hole, and the blood collection needle is fixed by being fitted into the locking hole by a locking projection provided at the rear end of the blood collection needle housing.

As a preferred embodiment of the present invention, the needle removing device includes a needle releasing spring accommodating chamber 41A provided at the tail of the blood collecting pen housing 1A, and the lancet housing 1A is provided with a composite end having a tail end abutting against the top of the needle releasing spring accommodating chamber 41A. The slider, the top end of the composite slider extends to the tail end of the blood collection needle housing, and the needle release spring housing chamber 41A is provided with a needle release spring 42A that abuts against the bottom of the needle release spring accommodation chamber 41A and the bottom of the composite slide rod.

As a preferred embodiment of the present invention, the needle unloading device further includes a needle release tab 43A disposed on both sides of the middle portion of the blood collection pen housing 1A, and the middle portion of the needle release tab 43A is hinged to the blood collection pen housing 1A. The upper end of the piece 43A is located in the blood collection pen case 1A against the locking projection, and the lower end of the needle release pad 43A is a needle release button that extends the blood collection pen case 1A.

As a preferred embodiment of the present invention, a firing chamber 23A is provided in the blood collection pen housing 1A, and a top end of the blood collection pen housing 1A is provided with a hammer opening, and the top end of the firing chamber 23A extends to the hammer opening.

As a preferred embodiment of the present invention, the top end of the firing hammer 2A is provided with a hammer head 24A that can be coupled to the tail end of the blood collection needle at the time of impact.

As a preferred embodiment of the present invention, the firing compartment 23A is provided with a limiting post 25A that blocks the firing hammer hook lock flap 22A.

By sliding the upper slide bar 31A on both sides of the pull-down along the slide groove, the hammer hook lever 3A can be driven to hook the hammer hook lock flapper 22A on both sides of the hammer 2A, thereby sliding downward by pulling the upper slide bar 31A. The firing hammer 2A is driven downward to compress the hammer spring 21A until the locking projection is embedded in the locking hole. When the locking projection is engaged in the locking hole, the blood collecting needle is mounted, the upper jaw is fired, and the upper and lower jaws are completed.

After the blood collection needle is installed, the upper jaw is fired, and the upper and lower jaws are completed, the blood collection pen is in a state to be fired. The locking projection is embedded in the locking hole, and the bottom of the upper jaw device compresses the unloading spring 42A. The unloading spring 42A is compressed and deformed in the unloading spring receiving chamber 41A, and the unloading spring 42A is in a state to be fired. The hammer hook lever 3A cooperates with the hammer hook baffle 22A, and the hammer hammer baffle 22A is hooked to pull the hammer 2A backward, and the hammer spring 21A is compressed and deformed in the hammer spring stopper. The hammer spring 21A is in a state to be fired.

Pressing the release button, the release tab 4A is partially pressed into the blood collection pen housing 1A, so that the extension piece is bent and deformed to both sides, pushing the release tab 4A to move outward, and pushing the firing hammer hook lever 31A to the outside. , the hammer hook lever 3A is separated from the hammer hook baffle 22A, the resistance of the hammer spring 21A is lost, the hammer spring 21A is elastically released, and the hammer 2A is fired, and the hammer 2A is located along the sliding slot of the hammer. The top of the blood collection pen housing 1A is hammered out, the hammer resetter is combined with the needle seat reset clip, the hammer 2A is inserted into the firing hole of the blood collection needle, and the needle rod fixing rod is pushed out from the break point or from the reset block along the needle rod fixing rod. The moving guide rail slides forward, the needle bar fixing rod first enters the column positioner to initially correct the movement path of the needle seat, and then enters the cone positioner, and the second fine adjustment corrects the movement track of the needle seat to the vertical state, and then enters the plane positioner to ensure the movement of the needle seat. The trajectory thus causes the needle tip and the needle hole to be in a vertical state, and the needle tip protrudes out of the pinhole to complete the firing.

After the firing is completed, pressing the unloading button on both sides pushes the unloading bar to rotate along the unloading bar, and drives the unloading tab 43A to move outward, pushing the locking projection away from the locking hole, so that the elastic force of the unloading spring 42A is greater than only Residual resistance, the elastic force of the unloading spring 42A is released, pushing the composite sliding rod forward, thereby pushing the upper sliding rod to slide forward, driving the extension arm and the composite locker to slide forward, and sliding to the starting point of the sliding groove at the front of the composite sliding rod When the blood collection needle is extended, the composite locker, the upper jaw pusher and the like are all separated from the blood collection pen, the blood collection needle is separated from the blood collection pen, and the hammer hook 3A and the hammer hook hook are broken through the resistance of the hook lock baffle. The front side of the hammer lock baffle 22A is fired. The blood collection pen returns to its initial state.

As a preferred embodiment of the present invention, the blood collection needle 8 is a needle-shaped sharp object, and a sharp object of another shape such as a blade may be used.

As a preferred embodiment of the present invention, the needle bar fixing rod 2 is provided with a limiting device 21 on both sides of the needle bar fixing rod 2, and the blood collecting needle housing 1 is provided with a matching limiting device 21 to reset the needle bar fixing rod 2 Reset device.

As a preferred embodiment of the present invention, the maximum width of the limiting device 21 is greater than the maximum width of the hole formed after the needle bar fixing rod is detached. In this way, the limiting device 21 can control the length of the lancet 8 after the triggering of the lancet 8, thereby ensuring that the lancet 8 can properly collect blood after puncturing, and can prevent the lancet 8 from detaching the lancet from the posterior after the blood collection is completed. Body 1, without causing harm to blood donors, operators and waste recyclers.

At the same time, after the blood collection is completed, the resetting device cooperates with the limiting device 21 to return the blood collecting needle 8 to the blood collecting needle housing 1 without any trouble of cleaning and damage to the operator and the patient.

As a preferred embodiment of the present invention, the resetting means is an elastic rod 3 located inside the lancet housing 1 inclined toward the bottom of the lancet housing 1 or parallel to the bottom of the lancet housing 1.

As a preferred embodiment of the present invention, the resetting means is an elastic rod 3 which is located in the lancet housing 1 and which is inclined toward the needle opening 11 side, and the elastic rod 3 and the resetting means are provided with hooks 13 on both sides thereof.

As a preferred embodiment of the present invention, the resetting device includes an elastic rod 3 disposed on both sides of the needle bar fixing rod 2 and opening to the side of the needle exiting port 11, and the lancet housing 1 is provided with an inclined groove 14 and a sloped groove 14 is gathered along the side of the lancet housing 1 toward the side of the needle exit 11.

In the setting form of the three kinds of resetting devices, the elastic rod 3 is compressed or stretched during the process of puncturing the blood collecting needle 8, and after the blood collecting needle 8 is stabbed in place for blood collection, the elastic rod 3 is under its own elasticity. Returning to the initial state, a perfect reset of the lancet 8 can be achieved.

As a preferred embodiment of the present invention, the resetting means is a return spring 4 located between the needle exit port 11 and the stopper means 21.

The setting form of the return spring 4 is also an arrangement form of the reset device in the present invention, and the return spring 4 is more stable, and the reset of the blood collection needle 8 after blood collection can be better realized.

The setting of the resetting device can be implemented in various forms, and the resetting function of the lancet 8 can be realized by providing an accessory on the needle bar fixing rod 2 or by providing an independent resetting member in the lancet housing 1.

As a preferred embodiment of the present invention, the lancet housing 1 is provided with a stop plate on both sides of the needle exit port 11, and the maximum width of the tip end of the needle bar fixing rod 2 is larger than the maximum width of the needle exit port 11.

The cut-off baffle is disposed on both sides of the needle-out port, and is placed horizontally inside the lancet housing 1 , and the baffle plate is emitted by the blood-collecting needle when the blood-collecting needle is emitted for blood collection, and the blood-collecting needle is emitted through the needle-out port 11 The tip of the needle bar fixing rod 2 is blocked by the stopper to prevent the needle of the blood collection needle 8 from being exposed excessively.

The top end of the cut-off baffle and the needle bar fixing rod 2 may be rings and cylinders of different diameters that cooperate with each other. Preferably, the inner diameter of the needle-out port 11 is smaller than the outer diameter of the needle bar fixing rod 2, and the cut-off baffle is provided with at least one set.

The cut-off baffle is preferably a set, and is disposed at the front of the lancet housing 1 and the needle stick fixing rod 2 around the needle exit 11, and may also be disposed at any position on the lancet housing 1 and the needle stick fixing rod 2. It is also possible to provide various means for limiting the displacement of the needle bar fixing rod between the lancet housing 1 and the needle bar fixing rod 2, either internally or in combination with the internal components and or the peripheral components.

The setting of the stop baffle can well define the maximum displacement of the needle bar fixing rod 2, control the puncture depth, and prevent the needle from being excessively exposed.

As a preferred embodiment of the present invention, the lancet housing 1 is provided with a reset block 5 on both sides of the needle bar fixing rod 2, and an arcuate groove 51 in each reset block 5, and two sides of the needle bar fixing rod 2 are provided. When the needle bar fixing rod 2 is reset, the projection 52 of the arcuate groove 51 can be engaged, and the arcuate groove 51 is provided with a notch 53 which can guide the projection 52 into the arcuate groove 51.

The lancet 8 is reset by the action of the resetting device, and the setting of the reset block 5 can effectively reset the needle bar fixing rod 2 to prevent the needle bar fixing rod 2 from being over-reset, during the resetting process of the needle bar fixing rod 2. The protrusions 52 on both sides of the needle bar fixing rod 2 can be embedded in the arcuate groove 51. The arrangement of the notch 53 can reduce the blocking of the protrusion 52 on both sides of the needle bar fixing rod 2 by the reset block 5 to facilitate the protrusion 52. Slide into the arcuate groove 51. The setting of the reset block 5 can also serve to fix the needle bar fixing rod 2 when the needle bar fixing rod 2 is separated from the blood collection needle housing 1, and maintain the needle rod fixing rod 2 in the state before the firing.

As a preferred embodiment of the present invention, the end of the needle bar fixing rod 2 is provided with a resetting clip 22, and the resetting clip 22 is a symmetrical locking rod 221, and each of the locking rods 221 is provided with a buckle 222 facing the inner side.

As a preferred embodiment of the present invention, the tail end of the needle bar fixing rod 2 is provided with a resetter 23, and the resetter 23 is a circular cover 231 protruding from the tail end of the needle bar fixing rod 2, and the circular cover 231 can be embedded in the top end of the blood collection pen Reset with the blood collection pen pulled out.

As a preferred embodiment of the present invention, the bottom of the blood collection needle housing 1 is a needle holder, and the tail end of the needle rod fixing rod 2 is fixed to the needle holder, and the needle holder is provided with a bending opening 15. As a preferred embodiment, the bend openings 15 are provided on both sides of the needle hub, thereby making assembly easier. The bending opening 15 is provided at least one, and may be disposed at other parts of the blood collection needle housing.

The setting of the bending port 15 can facilitate the injection molding or injection molding of the lancet structure in one time. After the injection molding or the injection molding is completed, the assembly of the safety lancet product can be completed simply by bending or pressing.

As a preferred embodiment of the present invention, the end of the blood collection needle housing 1 is provided with an extension arm 6 matching the tail end of the blood collection needle housing 1, and the extension arm 6 is provided with an upper jaw position 61, and the extension arm 6 is provided therein. At least one of the upper cassettes 61. In a preferred embodiment, at least one pair of mutually symmetric upper jaws 61 are provided in each of the extension arms 6.

As a preferred embodiment of the present invention, the bottom of the extension arm 6 is open, and the composite end of the extension arm 6 is provided with a composite lock 62 that is fixed to the composite locking hole on the blood collection pen.

As a preferred embodiment of the present invention, the composite lock 62 is two protrusions symmetrically disposed in the extension arm 6. Each of the protrusions is one of a tapered shape, a semicircular shape, and a trapezoidal shape, and may be other shapes.

The safety type blood collection needle structure can be used with the blood collection pen. At this time, the reset clip 22 or the resetter 23 provided at the end of the needle rod fixing rod 2 can be fixed with the top end of the blood collection pen, and after the blood collection is completed by the blood collection pen, During the recovery of the blood collection pen, the needle bar fixing rod 2 fixedly coupled with the top of the blood collection pen can be recovered under the retraction force of the blood collection pen.

In the process of using the blood collection pen, the upper jaw card 61 and the composite locker 62 can better achieve a fixed connection with the blood collection pen to ensure a better connection effect.

The extension arm 6 is provided with an upper jaw position 61, at least one, preferably two, symmetrically placed on both sides, and is a horizontally elongated block-like device for use with the upper jaw device of the designated blood collection pen. In the process of combining the blood collection needle 8 with the designated blood collection pen, the composite sliding rod is pushed backward to achieve the purpose of the upper jaw. After the combination of the blood collection needle and the designated blood collection pen, the composite slide rod is maintained at the corresponding position to maintain the upper jaw state. The composite slide bar is pushed forward from the blood collection pen by the composite slide bar under the thrust of the spring-loading spring during the unloading. The upper card position 61 can also adopt a semi-circular shape, a trapezoidal shape or the like, and the placement manner can also adopt other placement methods such as vertical placement, oblique placement, and asymmetric placement.

The safety type blood collection needle is provided with a composite locker 62, at least one, preferably two sets of tapered block-like devices are arranged on the extension arm 6 in a vertical manner, and are placed symmetrically with the composite locking hole of the designated blood collection pen. . When combined with the composite locking hole, as a clamping mechanism, an inward pressure is formed to tightly connect the blood collection needle to the pen body. Cooperating with the composite locking hole, the purpose of maintaining the upper jaw state and the unloading state is achieved simultaneously after the combination. Cooperate with the composite locking hole to achieve the purpose of maintaining the unloading state after firing. The composite lock 62 can also be semi-circular, trapezoidal or other shapes, and the placement manner can also be other vertical placement, oblique placement, asymmetric placement, and the like.

As a preferred embodiment of the present invention, a lancet housing fixing buckle 7 is provided outside the lancet housing 1. The lancet housing fixing clip 7 can also be placed inside the lancet housing 1, between the lancet housing 1 and the hub.

As a preferred embodiment of the present invention, the tail end of the needle bar fixing rod 2 is provided with a firing rod extending rearward. It is preferably cylindrical, which is convenient for manual pressing and the lancet to fire the hammer, or other shapes.

As a preferred embodiment of the present invention, the tail end of the needle bar fixing rod 2 is provided with an outwardly extending support plate. It is preferably arranged on both sides to facilitate the operator as a firing fulcrum when operating with one hand.

As a preferred embodiment of the present invention, the upper end of the lancet housing 1 is narrowed toward the top, and the lancet housing 1 is further provided with a needle bar fixing rod moving guide for guiding the needle bar fixing rod 2 to slide.

As a preferred embodiment of the present invention, the needle bar fixing rod motion guide rail is provided with a positioner for correcting the movement track of the needle bar fixing rod 2, preferably two or more stages, and the positioning accuracy of the lower level positioner is higher than that of the upper level positioner. This embodiment adopts three stages, which are a column locator, a cone locator and a plane locator.

After the blood collection needle is fired, the needle bar fixing rod 2 is detached from the easy cracking point or from the resetting block, and slides forward along the moving rod of the needle bar fixing rod, and the needle bar fixing rod 2 first enters the columnar positioner to initially correct the movement track of the needle bar fixing rod 2 Then enter the conical positioner, and secondly adjust the movement track of the needle bar fixing rod 2 to the vertical state, and then enter the plane positioner to ensure the movement of the needle seat so that the needle tip and the needle hole are in a vertical state, and the needle tip protrudes out of the pinhole. Fired.

The safety type lancet structure can realize the firing of the lancet with one hand by setting the firing rod and the support plate. It is also possible to achieve better blood collection effect by setting the extension arm 6, the composite locker 62 and the upper jaw card 61, and it is better to achieve both the one-handed and the blood-collecting pen.

As a preferred embodiment of the present invention, the lancet housing 1 is provided with a skin tensioner 9 that can be expanded outward.

The skin tensioner 9 is located outside the top end of the blood collection needle housing 1. When the blood collection needle is used, the top end of the blood collection needle housing 1 is placed against the human skin, and the skin tensioner 9 is deformed and expanded toward both sides, and can be tightened. The skin of the blood collection site. The skin tensioner 9 is arranged to allow the needle tip to puncture into the human tissue more smoothly, reducing the pain of the patient during the acupuncture.

The device of the invention has the advantages of simple structure, few components, easy assembly, high reliability and safe use. By setting the bend and the snap device, the injection molding or injection molding can be completed at one time, and the assembly of the product can be completed simply by bending and pressing. Significantly save materials, reduce processes and reduce production costs, significantly reducing the financial burden on medical institutions and patients.

The lancet structure can achieve the quick-up function of one-click smashing and smashing smashing when used in conjunction with the matching blood collection pen, which is convenient for the operator to operate.

The invention is of course not limited to the embodiments described above, and equivalent variations or substitutions may be made by those skilled in the art without departing from the spirit of the invention, and such equivalents or alternatives are included in the claims of the present application. Within the limits.

Claims

A bouncing type blood collection pen structure, comprising: a blood collection needle and a blood collection pen housing (1A) on one end of which a blood collection needle can be mounted, and an upper jaw device and a firing device disposed in the blood collection pen housing (1A) and a needle unloading device comprising a hammering hammer (2A) disposed in the blood collection pen housing (1A) for striking the tail of the blood collection needle or combined with the tail end of the blood collection needle and a hammer spring connecting the firing hammer (2A) 21A), the blood collection needle comprises a blood collection needle housing (1), a needle rod fixing rod (2) located in the blood collection needle housing (1), and a blood collection needle fixed to the top end of the needle rod fixing rod (2) ( 8) The top end of the lancet housing (1) is provided with a needle outlet (11), and the needle rod fixing rod (2) is disposed inside the lancet housing (1) or with the lancet housing ( 1) There is a connection point with a frangible mouth (12).
The bouncing type blood collection pen structure according to claim 1, characterized in that: the blood collection pen housing (1A) is provided with a chute on both sides, and the upper jaw device comprises a firing hammer on both sides of the firing hammer (2A) a hook rod (3A) and a top slide bar (31A) slidable along the chute, and both sides of the firing hammer (2A) are provided with a hammer hook lock that can be inserted into the inner side of the hammer hook (3A) to achieve the upper jaw Board (22A).
A bouncing type lancet structure according to claim 2, wherein a release pad (4A) for releasing the slamming hammer (2A) is disposed inside the firing hammer hook (3A), A release button is disposed on the blood collection pen housing (1A), and a release trigger signal is transmitted between the release button and the release pad (4A) through the extension piece.
The structure of the cartridge type blood collection pen according to any one of claims 1 to 3, characterized in that the top end of the blood collection pen housing (1A) is provided with a locking hole, and the blood collection needle passes through the blood collection needle housing. The locking projection provided at the end is embedded in the locking hole for fixing.
A bouncing type lancet structure according to claim 4, wherein said needle removing means comprises a needle releasing spring accommodating chamber (41A) provided at a tail portion of the lancet housing (1A), said lancet housing (1A) is provided with a composite slide rod whose tail end abuts against the top of the needle discharge spring accommodating chamber (41A), the top end of the composite slide rod extends to the tail end of the lancet housing, and the needle discharge spring accommodating chamber ( 41A) is provided with a needle removing spring (42A) which abuts against the bottom of the needle releasing spring receiving chamber (41A) and the bottom of the composite sliding rod.
A bouncing type blood collection pen structure according to claim 5, wherein said needle removing means comprises a needle releasing spring accommodating chamber (41A) provided at a tail portion of the blood collection pen housing (1A), said blood collection pen housing (1A) is provided with a composite slide rod whose tail end abuts against the top of the needle discharge spring accommodating chamber (41A), the top end of the composite slide rod extends to the tail end of the lancet housing, and the needle discharge spring accommodating chamber ( 41A) is provided with a needle removing spring (42A) which abuts against the bottom of the needle releasing spring receiving chamber (41A) and the bottom of the composite sliding rod.
The structure of the cartridge type blood collection pen according to any one of claims 1 to 3, characterized in that the blood collection pen housing (1A) is provided with a firing chamber (23A), and the blood collection pen housing (1A) The top end of the firing chamber is provided with a hammering port, and the top end of the firing chamber (23A) extends to the hammering port.
The bouncing type blood collection pen structure according to claim 7, wherein the top end of the firing hammer (2A) is provided with a hammer head (24A) connectable to the tail end of the blood collection needle at the time of impact.
The detachable blood collection pen structure according to claim 7, wherein the firing chamber (23A) is provided with a limit post (25A) that blocks the hammer hook lock flap (22A).
The structure of the detachable blood collection lance according to any one of claims 1 to 3, 4, 5, 8 and 9, wherein the needle bar fixing rod (2) is provided with a needle bar fixing rod ( 2) A limiting device (21) on both sides, wherein the lancet housing (1) is provided with a reset device that cooperates with the limiting device (21) to reset the needle bar fixing rod (2).
The detachable blood collection pen structure according to claim 10, wherein the resetting device is located inside the lancet housing (1) inclined toward the bottom of the lancet housing (1) or parallel to the lancet housing (1) ) The elastic rod (3) at the bottom.
A bouncing type blood collection pen structure according to claim 11, wherein said resetting means is an elastic rod (3) which is inclined in the lancet housing (1) toward the needle insertion port (11) side, said elasticity A hook (13) is provided on both sides of the rod (3) and the resetting device.
The bouncing type blood collection pen structure according to claim 11, characterized in that the resetting means is a return spring (4) located between the needle exit opening (11) and the limiting device (21).
A bouncing type blood collection pen structure according to claim 11, wherein said resetting means comprises an elastic rod (3) which is disposed on both sides of the needle bar fixing rod (2) and opens to the side of the needle opening (11). The lancet housing (1) is provided with a slanted groove (14) which is gathered along the side of the lancet housing (1) toward the outlet of the needle (11).
The structure of the detachable blood collection pen according to any one of claims 11 to 15, characterized in that: the lancet housing (1) is provided with a cut-off baffle on both sides of the needle-out port (11). The maximum width of the tip end of the needle bar fixing rod (2) is larger than the maximum width of the needle exit port (11).
The structure of the detachable blood collection lance according to any one of claims 11 to 15, characterized in that the lancet housing (1) is provided with a reset block on both sides of the needle bar fixing rod (2) ( 5) an arcuate groove (51) in each of the reset blocks (5), and two sides of the needle bar fixing rod (2) are arranged to be arcuately concave when the needle bar fixing rod (2) is reset A projection (52) of the groove (51), the arcuate groove (51) being provided with a notch (53) for guiding the projection (52) into the arcuate groove (51).
The bouncing type blood collection pen structure according to claim 16, characterized in that the end of the needle bar fixing rod (2) is provided with a reset clip (22), and the reset clip (22) is bilaterally symmetrical. The snap lever (221) is provided with a buckle (222) facing the inner side of each of the snap levers (221).
The structure of the bouncing type blood collection pen according to claim 16, characterized in that the end of the needle bar fixing rod (2) is provided with a resetter (23), and the resetter (23) is protruded from the needle bar. A circular cover (231) at the end of the fixed rod (2), the circular cover (231) can be inserted into the top end of the blood collection pen to be reset with the ejection of the blood collection pen.
The structure of the cartridge type blood collection pen according to any one of claims 11 to 15, characterized in that the bottom of the blood collection needle housing (1) is a needle holder, and the tail of the needle rod fixing rod (2) The end is fixed on the needle seat, and the needle seat is provided with a bending opening (15).
The structure of the cartridge type blood collection pen according to any one of claims 11 to 15, characterized in that the tail end of the blood collection needle housing (1) is provided to match the tail end of the blood collection needle housing (1). An extension arm (6), an upper jaw (61) is disposed in the extension arm (6), and at least one upper jaw (61) is disposed in the extension arm (6).
The structure of the detachable blood collection pen according to claim 20, wherein the bottom of the extension arm (6) is open, and the end of the extension arm (6) is provided with a composite locking hole on the blood collection pen. Fixed composite lock (62).
A bouncing blood collection pen structure according to claim 21, wherein said composite lock (62) is two projections symmetrically disposed within the extension arm (6).
The structure of the cartridge type blood collection pen according to any one of claims 11 to 15, characterized in that a blood collection needle housing fixing buckle (7) is provided outside the blood collection needle housing (1).
The structure of the cartridge type blood collection pen according to any one of claims 11 to 15, characterized in that the tail end of the needle bar fixing rod (2) is provided with a firing rod extending rearward.
The structure of the cartridge type blood collection pen according to any one of claims 11 to 15, characterized in that the tail end of the needle bar fixing rod (2) is provided with an outwardly extending support plate.
The structure of the cartridge type blood collection pen according to any one of claims 11 to 15, characterized in that the blood collection needle housing (1) is provided with a skin tensioner (9) which can be expanded outward.