WO2014071675A1

WO2014071675A1 - Blood sampling pen with multiple needles

Info

Publication number: WO2014071675A1
Application number: PCT/CN2013/000084
Authority: WO
Inventors: 张林锋
Original assignee: Zhang Linfeng
Priority date: 2012-11-09
Filing date: 2013-01-28
Publication date: 2014-05-15
Also published as: CN102934997B; CN102934997A

Abstract

Disclosed is a blood sampling pen with multiple needles comprising a hollow pen body (1) and a nib (2) connected to the lower end of the pen body (1). The inner part of the pen body (1) is equipped with a retractable drive rod (3) and the drive rod (3) is equipped with a syringe (4) below it. The nib (2) is equipped with more than two pen refills (5) therein and each of the pen refills (5) is equipped with a blood sampling needle (51) therein. The blood sampling pen has multiple blood sampling needles and is able to accomplish continuous and repeated blood sampling, which helps to improve the working efficiency.

Description

Multi-needle type blood collection pen

Technical field

The invention relates to a blood stasis device, in particular to a multi-needle type blood stasis pen.

Background technique

The blood collection pen is a common blood collection aid. It is equipped with a blood collection needle. It is mainly used for self-testing blood sugar in diabetic patients. It can also be used for clinical blood collection in routine hospital tests. The blood collection pen is used in conjunction with the blood glucose meter and the blood glucose test strip. After the blood is collected, the test strip is used to inhale blood (a drop), and then the blood glucose level appears on the blood glucose meter. In the prior art blood collection pen, there is only one disposable blood-staining needle in the pen, and the needle should be replaced after each use for the next use. Each time the needle is replaced, the front end of the needle, the needle is removed, and the needle is installed. The installation of the pen tip and other steps, the operation is more troublesome. If it is necessary to continuously collect blood for a plurality of patients, the blood collection process has a low work efficiency, and repeated disassembly and assembly of the pen and the needle can easily reduce the life of the blood collection pen and even cause damage to the blood collection pen.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a multi-needle type blood collection pen which solves many problems such as less blood collection needles, excessive needle replacement, troublesome operation, and low work efficiency.

To achieve the above object, the present invention discloses the following technical solutions:

A multi-needle type blood collection pen includes a hollow pen body and a pen tip connected to the lower end of the pen body, the pen body is internally provided with a retractable driving rod, and a syringe is disposed under the driving rod, There are more than two refills in the pen head, and each blood core has a blood collection needle.

An open core rod is disposed between the driving rod and the syringe, the open core rod is a hollow cylinder, and an annular baffle is disposed on an inner side wall of the open core rod, and the annular baffle side is Two or more short arm brackets are provided on the side wall of the cavity, and the syringe is disposed on the other side of the cavity.

The annular baffle forms a baffle gear ring toward a side of the syringe, the syringe forming a corresponding syringe gear ring toward a side of the annular baffle, the baffle gear ring and the syringe gear The rings mesh with each other.

The inner side wall of the open core rod is provided with a syringe baffle for fixing a syringe, the syringe includes an injection key and the syringe base, and the syringe base and the syringe baffle are disposed between the syringe baffle a first spring external to the injection button, the lower end of the syringe being provided with a corresponding one of the blood collection needles Injection joints.

The telescopic drive rod includes a linkage rod, a push rod sleeve sleeved outside the linkage rod, and a pressure rod sleeve sleeved outside the push rod sleeve, and the upper end of the pressure rod sleeve is fixed with a button, The upper end of the linkage rod is fixed on the pressing handle, the middle portion of the outer side wall of the pressure rod sleeve is provided with an annular outer surface of the pressure rod sleeve, and the inner side wall of the pressure rod sleeve is provided with an annular inner surface of the pressure rod sleeve. a second spring sleeved on the outside of the pressure rod sleeve is disposed between the lower surface of the outer shoulder of the pressure rod sleeve and the open core rod, and an inner portion of the inner side wall of the pressure rod sleeve is provided with an annular inner surface of the pressure rod sleeve. The upper end of the push rod sleeve is provided with a flange that is caught on the inner shoulder of the pressure rod sleeve, and a third sleeve is disposed between the lower surface of the pressing handle and the upper surface of the flange. spring.

a pen cap corresponding to the pen body is fixed on an upper end of the pen body, a cap gear ring is disposed on a lower surface of the pen cap, a positioning gear ring is disposed under the pen cap, the positioning gear ring and the cap gear ring Engaging with each other, a fourth spring is disposed between the lower surface of the positioning gear ring and the side wall of the pen body.

The inner side wall of the pressure rod sleeve is provided with more than one inner rod rib parallel to the central axis of the pressure rod sleeve, and the outer edge of the flange of the push rod sleeve is provided with more than one inner rod of the pressure rod Corresponding flange slots.

The pen body is provided with a cylindrical refill base connected to the pressure rod sleeve, and the refill seat is sleeved outside the pressure rod sleeve and the open core rod.

The outer side wall of the outer shoulder of the pressure rod sleeve is provided with more than one outer rod of the pressing rod parallel to the central axis of the pressure rod sleeve, and one or more corresponding pressure rods are arranged on the side wall of the upper portion of the refill base a gap of the outer rib, a buckle is disposed on the inner side wall of the positioning gear ring, and the buckle corresponds to a gap of the outer rib of the pressing rod.

The bottom of the refill base forms a ring, and the three bisectors of the ring are respectively provided with an inwardly facing claw.

A rotatable tray is disposed in the pen head, and two or more uniformly distributed pen cores are disposed on the tray, and three evenly distributed notches corresponding to the claws are disposed at edges of the pen tray.

The tray is provided with six evenly distributed refills, and the tray is provided with six evenly distributed notches corresponding to the claws, and two adjacent refills and the central axis of the tray The angle of the connection is 60 degrees.

The refill comprises a hollow needle holder, a blood stasis needle placed in the hollow needle holder, the blood stasis needle comprises a needle holder and a needle tip, and the lower end of each needle holder and the inner bottom of the hollow needle holder A fifth spring is disposed between the outside of the needle tip. The invention has the advantages that the utility model has the advantages that the plurality of blood collection needles can continuously complete the blood collection work continuously, the operation is simple, the blood collection is quick, and the work efficiency is improved. DRAWINGS

Figure 1 is a schematic view of the overall structure of the present invention;

2 is a schematic structural view of a pen body portion of the present invention;

3 is a schematic structural view of a pen portion of the present invention;

4 is a schematic structural view of a linkage rod of the present invention;

Figure 5 is a schematic structural view of a driving rod of the present invention;

Figure 6 is a schematic structural view of the push rod sleeve of the present invention;

1 is a schematic structural view of a pressure rod sleeve of the present invention;

Figure 8 is a longitudinal cross-sectional view of the open core of the present invention;

Figure 9 is a schematic structural view of the syringe of the present invention;

Figure 10 is a schematic structural view of a cap portion of the present invention;

Figure 11 is a schematic structural view of a positioning gear ring of the present invention;

Figure 12 is a schematic structural view of a refill of the refill of the present invention;

Figure 13 is a schematic cross-sectional structural view of the portion AA of Figure 3;

The figure is marked as follows:

1, pen body, 2, pen head, 3, drive rod, 4, syringe, 5, refill, 6, open core, 7, press the hand, 8, pen cap, 9, refill;

21, tray, 22, claws, 23, notch, 24, gear adjustment knob;

31, linkage rod, 32, push rod sleeve, 33, pressure rod sleeve;

41, injection joint, 42, injection button, 43, syringe base, 44, syringe gear ring;

51, blood collection needle, 52, hollow needle holder, 53, dialysis paper, 54, plastic layer;

61, annular baffle, 62, short arm bracket, 63, baffle gear ring, 64, syringe baffle;

71, a first spring, 72, a second spring, 73, a third spring, 74, a fourth spring, 75, a fifth spring;

81, cap gear ring, 82, positioning gear ring;

91, gap;

321 , flange, 3211, flange groove; 331, the outer shoulder of the pressure rod sleeve, 332, the inner shoulder of the pressure rod sleeve, 333, the inner rod of the pressure rod, 334, the outer rod of the pressure rod; 511, the needle seat, 512, the needle tip;

821, buckle. detailed description

The following examples will enable those skilled in the art to more clearly understand how to practice the invention. It is to be understood that the invention has been described in connection with the preferred embodiments thereof.

As shown in FIG. 1, FIG. 2 and FIG. 3, the present invention relates to a multi-needle type blood collection pen comprising a hollow pen body 1 and a pen tip 2 connected to the lower end of the pen body 1, the pen tip 2 being screwed with the pen body 1 The pen body 1 is internally provided with a retractable driving rod 3, and a syringe 4 is disposed under the driving rod 3 for generating a negative pressure required for blood drawing, and two or more refills 5 are provided in the pen head 2 for setting Retain the blood sample taken, each core

There is a blood collection needle 51 in the center 5, and the injection joint 41 of the syringe 4 corresponds to any blood collection needle 51. The retractable drive rod 3 pushes the syringe 4 to bleed, and the refill 5 can be used to take blood for rotation.

As shown in FIG. 4, FIG. 5, FIG. 6, and FIG. 7, the telescopic drive rod 3 includes a linkage rod 31, a push rod sleeve 32 that is sleeved outside the linkage rod 31, and a pressure rod sleeve 33 that is sleeved on the outside of the push rod sleeve 32. The upper end of the pressure rod sleeve 33 is fixed with a button 7 , and the upper end of the linkage rod 31 is fixed on the handle 7 . The middle portion of the outer side wall of the pressure rod sleeve 33 is provided with an annular outer sleeve 331 of the pressure rod sleeve, and the inner side wall of the pressure rod sleeve 33 The middle portion is provided with an annular inner sleeve 332, and a second spring 72 is disposed between the lower surface of the outer shoulder 331 of the pressure sleeve and the open core rod 6. The inner side wall of the pressure rod sleeve 33 is provided. The middle portion is provided with an annular inner sleeve 332, and the upper end of the push rod sleeve 32 is provided with a flange 321 which is clamped on the inner shoulder 332 of the pressing sleeve, and is disposed between the lower surface of the pressing sleeve 7 and the upper surface of the flange 321 A third spring 73 is fitted over the outside of the linkage rod 31. Each of the above components forms a linkage mechanism, and pressing the button 7 causes the linkage lever 31 to push down a certain distance while controlling the distance to prevent injury to the blood donor. Release the handle 7, and the linkage lever 31 will automatically reset.

As shown in FIG. 8, an open core rod 6 is disposed between the driving rod 3 and the syringe 4. The core rod 6 is a hollow cylinder. The inner side wall of the opening core rod 6 is provided with an annular baffle 61. The side wall of the side wall of the plate 61 is provided with two or more short arm brackets 62, and the cavity on the other side is provided with a syringe 4. The lower end of the linkage rod 31 can be used to detect a certain distance without harming the blood donor. The annular baffle 61 forms a baffle gear ring 63 toward the side of the syringe 4, and the syringe 4 faces a side of the annular baffle 61 to form a corresponding syringe gear ring 44, and the baffle gear ring 63 and the syringe gear ring ⁴⁴ mesh with each other. The syringe is turned After that, you can quickly locate it for next use.

As shown in FIGS. 8 and 9, the inner side wall of the open mandrel 6 is provided with a syringe shutter 64 for fixing the syringe 4. The syringe 4 includes an injection button 42 and a syringe base 43, a syringe base 43 and a syringe shutter 64. A first spring 71 is disposed between the outside of the injection button 42, and an injection joint 41 corresponding to the blood collection needle 51 is disposed at the lower end of the syringe 4. The refill 5 includes a hollow needle holder 52, a blood collection needle 51 disposed in the hollow needle holder 52, and the blood collection needle 51 includes a needle holder 511 and a needle tip 512, and the lower end of each needle holder 511 and the inner bottom of the hollow needle holder 52. A fifth spring 75 is provided between the outside of the needle tip 512. When the linkage rod 31 descends, the injection button 42 of the syringe is pushed down, and the blood stasis needle 51 is inserted into the blood vessel of the blood collection person; after the linkage rod 31 is reset, the injection button 42 is also reset, and the operation is quick and simple.

As shown in FIG. 10 and FIG. 11 , a pen cap 8 corresponding to the pen body 1 is fixed to the upper end of the pen body 1 , and the upper end of the pen cap 8 and the pen body 1 are screwed. The lower surface of the pen cap 8 is provided with a cap gear ring 81 and a cap. A positioning gear ring 82 is disposed below the positioning gear ring 82 and the cap gear ring 81. The fourth spring 74 is disposed between the lower surface of the positioning gear ring 82 and the side wall of the pen body 1. The cap 8 can be rotated a certain angle and will be positioned quickly. The side wall of the pen body 1 away from the end of the pen tip 2 is provided with a pen holder which is designed with the pen cap 8 so that the invention can be clamped in the pocket and is convenient to carry.

As shown in Fig. 12, the pen body 1 is provided with a cylindrical refill base 9 connected to the presser sleeve 33, and the refill seat 9 is sleeved outside the presser sleeve 33 and the open core 6. The inner side wall of the pressure rod sleeve 33 is provided with more than one inner rod 333 parallel to the central axis of the pressure rod sleeve 33. The outer edge of the flange 321 of the push rod sleeve 32 is provided with more than one corresponding to the inner rod 333 of the pressing rod. Flange groove 3211. The outer side wall of the outer sleeve 331 of the pressure rod sleeve is provided with more than one outer rod 334 parallel to the central axis of the pressure rod sleeve 33, and one side of the upper portion of the upper portion of the refill base 9 is provided with one or more corresponding outer rods 334 of the pressing rod. The gap 91, the outer rod 334 of the pressing rod is stuck in the slit 91, the positioning gear ring 82 is sleeved on the outside of the refill base 9, and the inner side wall of the positioning gear ring 82 is provided with a buckle 821, the buckle and the pressure The gap of the outer rib of the rod corresponds to and is also caught in the slit 91. When the cap 8 is rotated by a certain angle, the positioning gear ring 82 is not moved, and is not rotated by the cap 8 to rotate. After the cap 8 is rotated at a certain angle, it is also caught on the positioning gear ring 82 due to the action of the fourth spring 74.

The reel base 9 can also be rotated by a certain angle, and the various components in the drive rod 3 do not rotate. The fourth spring 74 allows the rotated refill seat 9 and the cap 8 to remain fixed together.

As shown in Fig. 2 and Fig. 13, the bottom of the refill base 9 forms a ring, and the three bisectors of the ring are respectively provided with an inwardly facing claw 22. The pen tip 2 is provided with a rotatable tray 21, and the tray 21 is provided with two or more uniformly distributed refills 5, and the tray 21 is provided with three evenly distributed edges, opposite to the claws 22. The gap should be 23. When the user rotates the cap 8, the tray 21 can be rotated by the reel seat 9. The outer surface of the writing head 2 is provided with a gear position adjusting knob 24, and the gear position adjusting button 24 is connected to the refilling base 9, and the user shifts the used refill by rotating the pen cap, and the gear position adjusting button 24 is convenient for the user to understand the adjustment. The gear position, while adjusting a new refill for use. A dialysis paper 53 having a thickness of 0.1 mm is disposed on the upper surface of the tray 21, and a plastic layer 54 having a thickness of 0.1 mm is disposed at the end of the pen tip 2 at the end of the pen tip 2 to keep the inside of the refill clean and free from contamination.

Preferably, the tray 21 is provided with six uniformly distributed refills 5, and the tray 21 is provided with six evenly distributed notches 23 corresponding to the claws 22, adjacent to the two refills 5 and the tray. The angle of the 21 center axis connection is 60 degrees.

In the working, the pen head is facing the blood collection site on the skin of the blood donor, the staff presses the hand 7 and keeps the hold state, the first spring 71, the second spring 72, the third spring 73, The fifth spring 75 is simultaneously compressed, and the plunger sleeve 33 pushes the syringe 4 downward to cause the injection joint 41 of the syringe 4 to pierce the dialysis paper 53 to be connected to the lower needle holder 511 while the lower end of the drive rod 3 enters the syringe 4. The air in the syringe 4 and the needle 51 is discharged, and the needle tip 512 pierces the plastic layer 54. The needle tip 512 breaks into the blood vessel of the person who has been sputum, relaxes the hand, and the springs are reset, and the respective descending components are reset, and the needle tip 512 is retracted. Since the second spring 72 and the third spring 73 are first restored to the original state, a small amount of blood sample is drawn into the blood collection needle 51 during the ascending of the driving rod 3, and is stored in the needle holder 51 1 , and after the driving rod 3 is reset, the fourth spring When the original shape is restored, the syringe 4 is also raised, so that the injection joint 422 is separated from the needle holder 511, and then the fifth spring 65 is restored to its original shape, and the needle tip 512 is retracted into the writing head 2, and blood collection is completed. After the parts are reset, the gear adjustment knob on the pen tip is rotated so that the other set of refills corresponds to the injection joint 422 of the injection button 42 for the next blood stasis use.

There are six refills in the pen 2, and the user opens the pen after six consecutive blood collections, takes out the refill 5 and replaces the new refill, and does not need to be replaced after each blood stasis, which is easy to operate and convenient to use.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. These improvements and retouchings should also be considered. It is the scope of protection of the present invention.

Claims

Claim

A multi-needle type blood collection pen comprising a hollow pen body and a pen tip connected to the lower end of the pen body, wherein the pen body is internally provided with a telescopic drive rod, below the drive rod A syringe is provided, and two or more refills are arranged in the pen head, and each of the refills is provided with a blood collection needle.

2. The multi-needle type blood collection pen according to claim 1, wherein a mouthpiece core is disposed between the drive rod and the syringe, and the open core rod is a hollow cylinder, An annular baffle is disposed on the inner side wall of the open core rod, and two or more short arm brackets are disposed on the side wall of the cavity on one side of the annular baffle, and the syringe is disposed on the other side cavity.

3. The multi-needle type blood collection pen according to claim 2, wherein the annular baffle forms a baffle gear ring toward a side of the syringe, the syringe facing one side of the annular baffle A corresponding syringe gear ring is formed, the baffle gear ring and the injector gear ring meshing with each other.

The multi-needle type blood collection pen according to claim 2 or 3, wherein the inner side wall of the open core rod is provided with a syringe shutter for fixing a syringe, the syringe including an injection key and the a syringe base, a first spring sleeved outside the injection button is disposed between the syringe base and the syringe shutter, and an injection joint corresponding to the blood vessel needle is disposed at a lower end of the syringe.

The multi-needle type blood collection pen according to claim 1 or 2, wherein the retractable drive rod comprises a linkage rod, a push rod sleeve sleeved outside the linkage rod, and the push rod An outer pressure sleeve, the upper end of the pressure rod sleeve is fixed with a pressing hand, the upper end of the linkage rod is fixed on the pressing hand, and the outer side wall of the pressing rod sleeve is provided with an annular pressing rod sleeve a shoulder portion, an inner portion of the inner side wall of the pressure rod sleeve is provided with an annular inner portion of the pressure rod sleeve, and a second spring sleeved outside the pressure rod sleeve is disposed between the lower surface of the outer shoulder surface of the pressure rod sleeve and the open core rod An inner portion of the inner side wall of the pressure rod sleeve is provided with an annular inner portion of the pressure rod sleeve, and an upper end of the push rod sleeve is provided with a flange that is caught on the inner shoulder of the pressure rod sleeve, and the lower surface of the pressing handle A third spring sleeved on the outside of the linkage rod is disposed between the upper surface of the flange.

The multi-needle type blood collection pen according to claim 5, wherein a pen cap corresponding to the pen body is fixed to an upper end of the pen body, and a cap gear ring is disposed on a lower surface of the pen cap, the cap a positioning gear ring is disposed below the positioning gear ring and the cap gear ring meshing with each other, A fourth spring disposed outside the pressure rod sleeve is disposed between the lower surface of the positioning gear ring and the side wall of the pen body.

The multi-needle type blood-staining pen according to claim 5, wherein the inner side wall t of the pressure rod sleeve is provided with one or more inner rods parallel to the central axis of the pressure rod sleeve, The outer edge of the flange of the push rod sleeve is provided with more than one flange groove corresponding to the inner rib of the pressing rod.

The multi-needle type blood collection pen according to claim 5, wherein the pen body is provided with a cylindrical refill base connected to the pressure rod sleeve, and the refill sleeve On the outside of the pressure rod sleeve and the open core rod.

The multi-needle type blood-staining pen according to claim 8, wherein the outer side wall of the outer shoulder of the pressing sleeve is provided with more than one outer bar of the pressing rod parallel to the central axis of the pressing sleeve, The side wall of the upper portion of the refill base is provided with one or more slits corresponding to the outer ribs of the pressing rod, and a buckle is disposed on the inner side wall of the positioning gear ring, and the buckle and the outer rib of the pressing rod are The gap corresponds.

10. The multi-needle type blood collection pen according to claim 8, wherein a bottom of the refill base forms a ring, and the three equal points of the ring are respectively provided with an inward claw.

1 . The multi-needle type blood collection pen according to claim 10, wherein the pen tip is provided with a rotatable tray, and the tray is provided with two or more refilled refills, the tray There are three evenly distributed notches corresponding to the jaws at the edges.

12 . The multi-needle type blood collection pen according to claim 11 , wherein the tray is provided with six evenly distributed refills, and the tray is provided with six evenly distributed edges and The corresponding gap of the claws, the angle between the adjacent two refills and the central axis of the tray is 60 degrees.

The multi-needle type blood collection pen according to claim 11 or 12, wherein the refill comprises a hollow needle holder, a blood collection needle placed in the hollow needle holder, and the blood collection needle includes a a needle seat and a needle tip, and a fifth spring disposed outside the needle tip between the lower end of each needle seat and the inner bottom of the hollow needle holder.