CN202537513U

CN202537513U - Split type hemostix with protector

Info

Publication number: CN202537513U
Application number: CN2012200256118U
Authority: CN
Inventors: 汪贤宗
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-05
Filing date: 2012-01-19
Publication date: 2012-11-21
Anticipated expiration: 2022-01-19
Also published as: CN102525489B; CN102525489A

Abstract

The utility model relates to a split type hemostix. A safety sleeve is provided with an opening which is arranged in the middle of a joint to be suitable for a user to press the middle of the joint with fingers when the safety sleeve is located at the second positioning position. In blood collection for patients by the aid of the split type hemostix, the safety sleeve is positioned at the second positioning position by a second positioner, a needle head is concealed in the sleeve for protecting medical staff from hurts, and accordingly, the medical staff can conveniently detach the joint from the sleeve by pressing the middle of the joint with fingers, and the sleeve with blood can be directly used as a test tube.

Description

Split type hemostix with protective device

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to take protector's split type hemostix.

Background

At present, when a hospital takes a blood sample for testing, a disposable syringe is generally used for taking blood, and then the collected blood sample is transferred into a test tube for testing to test the blood sample. During the transfer of the blood sample from the syringe to the test tube, contamination of the blood sample is likely to occur once carelessly handled.

In order to solve the above technical problems, chinese patent document CN201609369U discloses a blood sampling device, which comprises a needle cylinder, a joint, a fixing sleeve, a needle, a piston and a push rod, wherein the cross section of the needle cylinder is square, four corners of the needle cylinder are arc-shaped, and the push rod is detachably connected with the piston. The inner wall of the lower end of the joint is provided with internal threads, the outer wall of the upper end of the needle cylinder is provided with external threads, and the joint is in threaded connection with the needle cylinder; a fixed block is arranged at the top end of the push rod, the cross section of the fixed block is quadrilateral, one pair of edges is a straight line, and the other pair of edges is an arc line; the piston is internally provided with a cylindrical accommodating cavity for the fixed block to rotate, the piston is provided with an outlet for accommodating the fixed block to go in and out, and the width of the outlet is slightly wider than that of the fixed block. After using the hemostix to extract the blood sample, pulling the push rod, making the piston reach the bottom of cylinder, because rotating the push rod, making the straight line opposite side of fixed block correspond with the export, just can withdraw from the fixed block from cylindrical cavity, then take the push rod out from the round hole again, unload the joint that has the syringe needle of cylinder upper end, the hemostix just becomes the test tube of a splendid attire blood sample like this, can directly be used for the chemical examination with the test tube and use.

After the blood sampler in the technology is used for extracting blood samples, medical personnel are easily pricked by the exposed needle head and easily cause infection in the process of removing the joint with the needle head at the upper end of the needle cylinder due to the exposed needle head.

In order to solve the technical problem that medical staff are pricked by an exposed needle in the process of using a disposable syringe, the U.S. patent document US6206853B1 discloses an automatic retraction injection needle, which comprises a barrel, one end of which is provided with an injection needle supporting device, a movable piston is arranged in the barrel, the barrel is arranged in a sleeve and can slide, and a spring is arranged between the sleeve and the barrel; at least one elastic flange is matched with part of the barrel to form a first positioning position of the barrel relative to the sleeve, and when the spring is in the first positioning position, the spring is in a compressed state and the needle is exposed out of the sleeve; the positioning means positions the barrel in a second position relative to the sleeve in which the spring at least partially restores its natural state with the needle concealed within said sleeve. When the piston moves to the bottom end of the barrel, the elastic flange is triggered, the elastic flange is released from the barrel part, so that the automatic retraction injection needle changes from a state of being at a first positioning position to a state of being at a second positioning position, and the spring pushes the barrel to move until the barrel is positioned at the second positioning position. The positioning device comprises an elastic check ring arranged around the cylinder body, the elastic check ring is positioned between the sleeve and the cylinder body and is in a compressed state when being positioned at a first positioning position, and the elastic check ring is in a natural state when being positioned at a second positioning position; the end of the sleeve is provided with a sleeve portion and in the second set position the circlip is at least partially captured within the sleeve portion between the end of the sleeve and at least one shoulder on the sleeve portion to capture the cartridge in the second set position.

In the automatic retraction injection needle in the technology, when the needle head is in the first positioning position, the needle head is exposed outside the sleeve, and the injection can be carried out; after the injection is finished, when the automatic retraction injection needle is converted from the first positioning position to the second positioning position, the needle head is hidden in the sleeve, so that the situation that medical personnel are pricked by the exposed needle head is avoided. However, when the above-mentioned technique is applied to a blood sampling and testing dual-purpose blood sampling device with a joint, not only the needle is hidden in the sleeve but also the joint is hidden in the sleeve when the needle is in the second positioning position, so that there is no way to detach the joint from the syringe, and the dual-purpose blood sampling and testing of the blood sampling device can not be achieved.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to provide a needle protector for a blood sampling and testing dual-purpose blood sampling device, which is used in a blood sampling and testing dual-purpose blood sampling device, wherein the needle is hidden in the sleeve while the joint is hidden in the sleeve, so that there is no way to detach the joint from the needle cylinder, thereby preventing the blood sampling and testing dual-purpose blood sampling device from being detached, and further providing a split type blood sampling device with a protector, which can conveniently detach the joint from the needle cylinder.

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

a split type hemostix with a protective device comprises a cylinder body and a push rod, wherein the push rod is arranged in the cylinder body and is suitable for sliding along the inner wall of the cylinder body; the needle head consists of an injection needle and a joint which is used for fixing the injection needle and is movably connected with the barrel body; the safety sleeve is sleeved outside the barrel body; the safety sleeve is provided with a first positioning position and a second positioning position relative to the barrel, and when the safety sleeve is positioned at the first positioning position, the injection needle of the needle head is exposed outside the safety sleeve; the safety sleeve is provided with an opening in the middle, and when the safety sleeve is located at the second positioning position, the opening is located at the joint.

The opening is located the middle part of connecting, the opening is the rectangle setting.

A first locking mechanism is also provided for positioning the safety sleeve in a first position.

The first locking mechanism comprises a notch arranged on a flange at the lower end of the cylinder body and a hanging buckle arranged at the lower end of the safety sleeve; the hanging buckle is composed of a buckle belt and a buckle head, the buckle belt is suitable for being clamped into the notch, and the size of the buckle head is larger than that of the notch.

The buckle head is arranged in an inverted trapezoid shape.

A second locking mechanism is also provided for positioning the safety sleeve in a second positioning position.

The second locking mechanism includes a recess and one or more projections adapted to snap into the recess.

The groove is arranged at the joint; the protrusion is arranged on the inner wall of the sleeve.

The outer diameter of the joint is larger than that of the cylinder, and a transition section with the outer diameter gradually increasing from bottom to top is arranged near the top end of the cylinder.

The groove is arranged along the circumferential direction of the joint, and the bulges are uniformly distributed along the circumferential direction of the safety sleeve.

The recess is the ring channel, the arch is four.

The safety sleeve is axially arranged between the safety sleeve and the barrel body; a space suitable for the axial arrangement of the spring is arranged between the safety sleeve and the cylinder body; and a limiting component for limiting the spring upwards is formed between the safety sleeve and the barrel, and a flange at the lower end of the barrel limits the spring downwards.

The safety sleeve is composed of an upper sleeve and a lower sleeve, the inner diameter of the upper sleeve is smaller than that of the lower sleeve, a combination part is formed between the upper sleeve and the lower sleeve, and the combination part forms the limiting part.

The upper end of the push rod is provided with a crosshead which is convenient to break.

The top end of the push rod is provided with a piston seat for sealing the bottom end of the cylinder body, and the lower end of the piston seat is provided with a chuck with four chuck holes in an extending manner; the crosshead is clamped in the chuck.

The lower end of the cylinder body is provided with a tail plug for limiting the piston seat.

Compared with the prior art, the technical scheme of the utility model have following profitable technological effect:

(1) take protector's split type hemostix, the safety sleeve middle part is provided with the opening, works as when the safety sleeve is in second location position, the opening is located connect middle part department. Use protection device's split type hemostix is to patient's blood sampling back, the safety sleeve is in second location position, the syringe needle hide in the sleeve, can not cause the injury to medical personnel. Medical personnel passed through the finger and pressed this moment connect the middle part, can conveniently with connect the follow the joint is unloaded on the barrel to contain the barrel of blood and just can regard as the chemical examination test tube direct use.

(2) Take protector's split type hemostix, be provided with will safety sleeve is positioned the first locking mechanical system of first position location and will safety sleeve is positioned the second locking mechanical system of second position location. When first locking mechanical system locked safety sleeve in first locating position, the syringe needle of hemostix is stably exposed outside the safety sleeve, has guaranteed the stability of taking a blood sample work and has gone on. When the safety sleeve is locked at the second positioning position by the second locking mechanism, the needle head is stably hidden in the safety sleeve, so that the needle head is ensured not to hurt medical personnel, and the joint can be conveniently detached from the barrel.

(3) The split hemostix with the protective device of the utility model is characterized in that the spring is axially arranged between the safety sleeve and the cylinder body; a space suitable for the axial arrangement of the spring is arranged between the safety sleeve and the cylinder body; and a limiting component for limiting the spring upwards is formed between the safety sleeve and the barrel, and a flange at the lower end of the barrel limits the spring downwards. The spring is arranged, so that the safety sleeve automatically moves from the first positioning position to the second positioning position under the action of the elastic force of the spring, and the efficiency of actual blood sampling work is ensured.

(4) Take protector's split type hemostix, the push rod upper end is provided with the cross head of being convenient for to break. The arrangement of the crosshead ensures that the push rod is easily broken after the blood sampling is finished, and the cylinder body can be conveniently converted into a test dish for use.

(5) Take protector's split type hemostix, it is right that the push rod top is installed the barrel carries out bottom confined piston seat, the barrel lower extreme is provided with right the piston seat carries out spacing tail stopper. This arrangement ensures the seal against the blood sample when the cartridge is used as a cuvette and the stability of the cuvette during the assay operation.

Drawings

In order that the invention may be more clearly understood, embodiments of the invention will now be described in further detail with reference to the accompanying drawings. Wherein,

fig. 1 is a schematic perspective exploded view of the split hemostix with a protective device of the present invention;

fig. 2 is a partial sectional view of the split hemostix with guard of the present invention when the safety sleeve is in the first positioning position;

fig. 3 is a partial sectional view of the split hemostix with guard of the present invention when the safety sleeve is in the second positioning position;

FIG. 4 is an enlarged view of a portion of FIG. 3;

the reference numbers in the figures denote: 1-barrel, 101-flange, 102-notch, 103-tail plug, 104-transition section, 2-push rod, 201-crosshead, 202-handle, 3-piston seat, 301-clamping hole, 302-clamping head, 4-spring, 5-joint, 501-groove, 6-needle head, 601-injection needle, 7-safety sleeve, 701-upper sleeve, 702-lower sleeve, 703-joint part, 704-opening, 705-bulge, 706-hanging buckle, 7061-buckle belt and 7062-buckle head.

Detailed Description

As shown in fig. 1, the split hemostix with protective device of the present invention comprises a cylinder 1 and a push rod 2, wherein the push rod 2 is disposed in the cylinder 1 and adapted to slide along the inner wall of the cylinder 1; the needle head 6 consists of an injection needle 601 and a joint 5 which is used for fixing the injection needle 601 and is movably connected with the barrel 1; and the safety sleeve 7 is sleeved outside the barrel 1.

As shown in fig. 2 and 3, the push rod 2 is provided at an upper end thereof with a cross head 201 for easy breaking and at a lower end thereof with a handle 202. A piston seat 3 for sealing the bottom end of the cylinder body 1 is mounted at the top end of the push rod 2, and a clamping head 302 with four clamping position holes 301 is arranged at the lower end of the piston seat 3 in an extending manner; the crosshead 201 is clamped in the chuck 302. The piston seat 3 is located inside the barrel 1 and is suitable for sliding along the inner wall of the barrel 1, the lower end of the barrel 1 is provided with a tail plug 103 to limit the piston seat 3, and the piston seat 3 is prevented from sliding out of the barrel 1 in the using process.

The safety sleeve 7 is arranged at a first positioning position relative to the barrel 1, as shown in fig. 2, when the safety sleeve 7 is at the first positioning position, the injection needle 601 of the needle 6 is exposed out of the safety sleeve 7; take protector's split type hemostix still be provided with safety sleeve 7 is positioned the first locking mechanism of first position. As shown in fig. 1, a notch 102 is formed in a lower end flange 101 of the cylinder 1, a hanging buckle 706 is arranged on the lower end edge of the safety sleeve 7, the hanging buckle 706 comprises a buckle belt 7061 and a buckle head 7062, the size of the buckle head 7062 is larger than that of the notch 102, the shape of the buckle belt 7061 is matched with that of the notch 102, and the buckle head 7062 is in an inverted trapezoid shape.

The catch 706 and the notch 102 together form a first locking mechanism. As shown in fig. 2, in the process of pulling the safety sleeve 7 towards the lower end of the barrel 1, the needle 6 is gradually exposed out of the safety sleeve 7, the buckle 7061 is clamped in the notch 102, and the buckle 7062 is clamped by the notch 102, so that the safety sleeve 7 is positioned relative to the barrel 1. The safety sleeve 7 is now in the first position and the needle 6 is exposed outside the safety sleeve 7, at which time the device can be used for injecting or collecting blood from a person.

The safety sleeve 7 is also provided with a second positioning position relative to the barrel 1, and when the safety sleeve 7 is positioned at the second positioning position, the needle 6 is hidden in the safety sleeve 7; take protector's split type hemostix still be provided with safety sleeve 7 is positioned the second locking mechanical system of second location position. The second locking mechanism may be constituted by a recess 501 and one or more protrusions 705 adapted to snap into the recess 501. As shown in fig. 2 and 3, the groove 501 is provided at the joint 5 in this embodiment; four elastic bulges 705 are arranged on the inner wall of the sleeve, the bulges 705 are uniformly distributed along the circumferential direction, of course, the bulges 705 can also be arranged into one or more than one and distributed on the inner wall of the sleeve in other ways, and the purpose of arranging the bulges 705 is to insert the bulges 705 into the grooves 501 in a clamping manner, so that the position locking of the sleeve is realized.

As shown in fig. 3, the safety sleeve 7 moves from the first positioning position to the upper end of the barrel 1, and when the protrusion 705 is inserted into the groove 501, the position of the safety sleeve 7 relative to the barrel 1 is fixed again, and at this time, the safety sleeve 7 is located at the second positioning position, and the needle 6 is hidden in the safety sleeve 7.

As can be seen from fig. 4, the outer diameter of the joint 5 is larger than that of the cylinder 1, the top of the cylinder 1 is provided with a transition section with gradually increasing outer diameter, and the protrusion 705 passes through the transition section and then is inserted into the groove 501 in the process of moving the safety sleeve 7 from the first locating position to the second locating position. As shown in fig. 13, when the protrusion 705 is located below the transition section, the protrusion 705 is not deformed because the outer diameter of the cylinder 1 is smaller than the distance between two opposite protrusions 705. When the safety sleeve 7 continues to move towards the upper end of the cylinder 1, the outer diameter of the top of the cylinder 1 at the transition section is gradually increased, so that the protrusion 705 is elastically deformed, and when the protrusion 705 moves to the groove 501, the protrusion 705 is restored and is embedded into the groove 501.

As shown in fig. 1 and 3, the safety sleeve 7 is provided with an opening 704, and in this embodiment, the opening 704 is rectangular. The opening 704 is preferably arranged at the middle of the joint 5 when the safety sleeve 7 is in the second positioning position. Of course, the opening 704 may be provided in any other shape, and may be provided as a plurality of openings, as long as the opening 704 is located at the middle of the joint 5 when the safety sleeve 7 is in the second positioning position. The opening 704 is provided so that the adapter can be removed from the barrel by finger gripping through the opening 704.

When being used for blood sampling and testing of human body, the split type hemostix with the protection device is firstly to hang the buckle 706 and buckle into the notch 102, as shown in fig. 2, the safety sleeve 7 is arranged in the first positioning position, the needle head 6 is exposed outside the safety sleeve 7, and blood can be sampled to human body like a common hemostix at the moment. After blood collection is completed, as shown in fig. 3, the push rod 2 is far away from the barrel 1, and the piston seat 3 abuts against the tail plug 103 at the lower end of the barrel 1, at this time, the hanging buckle 706 is broken away from the notch 102, the safety sleeve 7 is pushed to move from the first locating position to the second locating position, at this time, the opening 704 is located at the middle of the joint 5 and is suitable for being pressed by fingers to the middle of the joint 5, and the needle 6 is hidden in the sleeve, so that medical staff cannot be injured. Medical personnel at first will the push rod is followed cross head 201 below rupture, then press through the finger joint 5 middle part, can conveniently with joint 5 is followed the barrel 1 is unloaded to the barrel 1 that contains blood just can regard as the direct use of chemical examination test tube.

As a preferred embodiment, the split type hemostix with protective device of the present invention further comprises a spring 4, as shown in fig. 2 and 3, the spring 4 is axially installed between the safety sleeve 7 and the cylinder 1; a space suitable for the axial arrangement of the spring 4 is provided between the safety sleeve 7 and the cylinder 1; a limiting component for limiting the spring 4 upwards is formed between the safety sleeve 7 and the cylinder body 1, and a flange 101 at the lower end of the cylinder body 1 limits the spring 4 downwards. In this embodiment, the safety sleeve 7 is composed of an upper sleeve 701 and a lower sleeve 702, an inner diameter of the upper sleeve 701 is smaller than an inner diameter of the lower sleeve 702, a joint 703 is formed between the upper sleeve 701 and the lower sleeve 702, and the joint 703 constitutes the limiting component. After blood collection is finished, the hanging buckle 706 is separated from the notch 102, and the safety sleeve 7 can automatically move from the first positioning position to the second positioning position under the elastic force of the spring 4.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. It is not necessary or necessary to exhaustively enumerate all embodiments herein, and obvious variations or modifications can be introduced thereby while remaining within the scope of the present invention as claimed.

Claims

1. A split type hemostix with a protective device comprises

The push rod is arranged in the cylinder and is suitable for sliding along the inner wall of the cylinder;

the needle head consists of an injection needle and a joint which is used for fixing the injection needle and is movably connected with the barrel body;

the safety sleeve is sleeved outside the barrel body;

the safety sleeve is provided with a first positioning position and a second positioning position relative to the barrel, and when the safety sleeve is positioned at the first positioning position, the injection needle of the needle head is exposed outside the safety sleeve; when the safety sleeve is in the second positioning position, the needle head is hidden in the safety sleeve;

it is characterized in that the preparation method is characterized in that,

the safety sleeve is provided with an opening in the middle, and when the safety sleeve is located at the second positioning position, the opening is located at the joint.

2. The split type hemostix according to claim 1, wherein the opening is located at the middle part of the joint and the opening is rectangular.

3. The split hemostix according to claim 1 or 2, further comprising a first locking mechanism for positioning the safety sleeve at a first positioning position.

4. The split hemostix according to claim 3, wherein the first locking mechanism comprises a notch provided on the flange of the lower end of the cylinder and a hanging buckle provided on the lower end of the safety sleeve; the hanging buckle is composed of a buckle belt and a buckle head, the buckle belt is suitable for being clamped into the notch, and the size of the buckle head is larger than that of the notch.

5. The split type hemostix according to claim 4, wherein the button head is in an inverted trapezoid shape.

6. The split-type hemostix according to claim 1, 2, 4 or 5, further comprising a second locking mechanism for positioning the safety sleeve at a second positioning position.

7. The split lancing device of claim 6, wherein the second locking mechanism comprises a groove and one or more protrusions adapted to snap into the groove.

8. The split hemostix of claim 7, wherein the groove is provided at the joint; the protrusion is arranged on the inner wall of the sleeve.

9. The split type hemostix according to claim 8, wherein the joint has an outer diameter larger than that of the cylinder, and a transition section with an outer diameter gradually increasing from bottom to top is provided near the top end of the cylinder.

10. The split hemostix according to claim 7, 8 or 9, wherein the grooves are circumferentially arranged along the joint, and the protrusions are circumferentially and uniformly distributed along the safety sleeve.

11. The split-type hemostix according to claim 7, 8 or 9, wherein the grooves are annular grooves and the protrusions are four.

12. The split-type hemostix of claim 1, 2, 4, 5, 7, 8 or 9, further comprising a spring axially mounted between the safety sleeve and the barrel; a space suitable for the axial arrangement of the spring is arranged between the safety sleeve and the cylinder body; and a limiting component for limiting the spring upwards is formed between the safety sleeve and the barrel, and a flange at the lower end of the barrel limits the spring downwards.

13. The split type hemostix according to claim 12, wherein the safety sleeve comprises an upper sleeve and a lower sleeve, the inner diameter of the upper sleeve is smaller than the inner diameter of the lower sleeve, and a joint is formed between the upper sleeve and the lower sleeve and constitutes the position-limiting member.

14. The split-type hemostix according to claim 1, 2, 4, 5, 7, 8, 9 or 13, wherein the upper end of the push rod is provided with a cross head for easy breaking.

15. The split type hemostix according to claim 14, wherein a piston seat for closing the bottom end of the cylinder is installed at the top end of the push rod, and a chuck with four chuck holes is extended from the lower end of the piston seat; the crosshead is clamped in the chuck.

16. The split type hemostix according to claim 15, wherein the lower end of the cylinder is provided with a tail plug for limiting the piston seat.