CN211022699U

CN211022699U - Push type hemostix

Info

Publication number: CN211022699U
Application number: CN201921180198.0U
Authority: CN
Inventors: 陈亮; 张千
Original assignee: Huaian Tianda Medical Instruments Co ltd
Current assignee: Huaian Tianda Medical Instruments Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-07-17
Anticipated expiration: 2029-07-25

Abstract

The utility model relates to the field of medical auxiliary equipment, and discloses a pressing type hemostix, wherein before the hemostix is launched, a blood taking needle is always positioned inside the launcher, so that medical personnel or other people are effectively prevented from contacting a needle head to cause cross infection; in the process of puncture after the hemostix is launched, the skin is quickly punctured after the needle head of the blood taking needle is ejected out of the needle head outlet of the hair pusher, after the puncture is finished, the needle head of the blood taking needle can be quickly rebounded back into the hair pusher by the spring, and a patient cannot see the blood taking needle in the whole process of puncture and after the puncture is finished, so that the fear of the patient (particularly children) is effectively prevented, and the used hemostix cannot stab the hand of a collector because the blood taking needle is exposed outside, otherwise, the cross infection is avoided; when blood is collected, the medical care personnel only need to paste one end of the hair pusher with the needle head outlet on the skin and then press the end to realize the needle insertion, and the operation is very convenient; in addition, the hemostix has simple structure, safety and reliability.

Description

Push type hemostix

Technical Field

The utility model relates to a medical treatment auxiliary assembly field, in particular to push type hemostix.

Background

At present, medical institutions generally directly take blood with a blood taking needle during conventional blood taking, although one needle can be used by one person in the method, the cross infection is avoided, patients directly see the needle, and the fear mind (particularly children) is generated. When the other type of blood sampling is carried out, the blood taking needle is taken and matched with the blood taking pen for use, the blood taking needle is arranged in the blood taking pen, the blood taking needle is taken down after the needle is shot, the other blood taking needle is arranged for reuse, and the blood taking pen is repeatedly used for countless times, so that cross infection is easily caused. Two kinds of blood sampling methods above, medical staff direct contact blood taking needle, artifical with the syringe needle dress get when the blood sampling, carelessly very easy stab, arouse cross infection, there is certain potential safety hazard, still kind of mode, present more advanced blood taking needle adopts the retractile formula, the blood sampling finishes the back syringe needle and automatic retraction to the casing in, but this kind of retractile formula blood taking needle at present uses a block usually, the block is one section at the blood taking syringe needle, can cover on the blood taking syringe needle shell after using up, also can arouse cross infection in the use.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: to the problem that exists among the prior art, the utility model provides a push type hemostix avoids the patient to see the syringe needle during blood sampling, prevents to arouse the fear psychology, can effectively avoid cross infection, and it is simple and convenient to use, simple structure, safe and reliable.

The technical scheme is as follows: the utility model provides a pressing type hemostix, which comprises a coaxially assembled shell, a hair pusher and a needle body ejector; the needle body ejector comprises: the bottom spring is fixedly connected with the bottom in the shell; a pair of cambered surface convex shoulders are symmetrically arranged on two sides of the outer wall of the fixed seat; the hair pushing device comprises: the needle head is a cylinder with an opening at the bottom and a needle head outlet at the top, and two longitudinal launching notches with openings at the bottom end and a blind end at the top end, a pair of arc-shaped sliding surfaces matched with the arc-shaped convex shoulder and a pair of arc-shaped elastic clamping jaws positioned on the outer wall of the opening at the bottom end are symmetrically arranged on the side wall of the cylinder; the housing: two longitudinal limiting grooves and two longitudinal blocking ribs are symmetrically arranged on the inner wall of the clamping device, and the two cambered surface elastic clamping jaws are respectively connected with the two longitudinal limiting grooves in a sliding manner; before the hemostix is launched, the arc-shaped sliding surface, the longitudinal blocking rib and the bottom end of the longitudinal limiting groove are all positioned above the arc-shaped convex shoulder; after launching, the two cambered surface convex shoulders are respectively positioned in the two longitudinal launching notches and between the longitudinal limiting groove and the longitudinal blocking rib.

Preferably, the arc-shaped sliding surface is positioned between the longitudinal launching notch and the arc-shaped elastic claw.

Preferably, the top end of the arc-shaped sliding surface is connected with the longitudinal launching notch, and the bottom end of the arc-shaped sliding surface is connected with the bottom end face of the hair pusher.

Furthermore, in the hair pusher, a longitudinal guide convex rib is respectively arranged above the top ends of the two arc-shaped sliding surfaces and on one side of the longitudinal emission notch; after the hair pusher is assembled with the shell, the longitudinal guide convex rib is positioned outside the longitudinal limiting groove, and the longitudinal guide convex rib is tangent to one side, far away from the longitudinal limiting groove, of the longitudinal blocking rib; after the hemostix is launched, the longitudinal blocking rib is positioned between the longitudinal guide convex rib and the cambered surface convex shoulder. The setting of the protruding muscle of vertical direction for the cambered surface elasticity jack catch of pushing away the ware is installed the vertical spacing inslot back of shell inner wall, and whole pushing away the ware and can't be rotatory in the shell promptly, makes the motion trail of hemostix at the in-process of transmission be the straight line, just so can guarantee that the catapult is when being launched away, launches the route and be the straight line, guarantees that the blood taking needle can not squint, improves puncture effect accuracy.

Furthermore, the bottom of shell has the constant head tank, two vertical spacing groove and two vertically block the muscle respectively symmetric distribution and be in the constant head tank both sides, the bottom has the location trip in the constant head tank, the bottom of spring with the location trip buckle is fixed.

Further, the needle body ejector comprises a fixed seat, a blood taking needle and a spring, and the top end of the spring is fixed with a clamping rib at the bottom of the fixed seat in a buckling manner; the blood taking needle is coaxially fixed in the fixed seat, and the needle head of the blood taking needle extends to the outside of the top end of the fixed seat; before the hemostix launches, the needle body catapult with the constant head tank is located the coplanar, and after the hemostix launches, the plane that the two are located has the preset contained angle.

Furthermore, the needle body ejector also comprises a torsion bar, two limiting convex shoulders are symmetrically arranged on two sides of the middle part of the torsion bar, when the hemostix is in a transportation state, the bottom end of the torsion bar is connected with a top breakpoint of the fixing seat, and the limiting convex shoulders are positioned in the ejector and abut against the lower surface of the needle head outlet; when the hemostix is in an emission state, the torsion bar is separated from the hemostix. The certain distance is arranged between the limiting convex shoulder of the torsion bar and the arc-shaped convex shoulder of the fixing seat, the arc-shaped convex shoulder can be always limited below the bottom surface of the hair pusher by the certain distance, namely, the arc-shaped sliding surface is ensured, the bottom ends of the longitudinal blocking ribs and the longitudinal limiting grooves are always positioned above the arc-shaped convex shoulder, so that the hair pusher can not be pressed when in a transportation state, the needle body ejector is effectively prevented from being ejected when in the transportation state, and the cross infection caused by the needle head outlet of the hair pusher which is ejected when in the transportation state is effectively prevented.

Furthermore, the lower parts of the two longitudinal limiting grooves are respectively provided with transverse limiting convex ribs which are symmetrically distributed; when the hemostix is in a transportation state, the two cambered surface elastic clamping claws are clamped below the two transverse limiting convex ribs. The torsion bar is used with the cooperation of horizontal spacing protruding muscle, can make the ware of sending out by spacing motionless between horizontal spacing protruding muscle and spacing convex shoulder, effectively prevents that the ware of sending out is pressed when the transport state from arousing.

Preferably, the two longitudinal transmitting notches, the two longitudinal limiting grooves and the two longitudinal blocking ribs are all arranged in parallel with the central axis of the shell.

Preferably, the upper surface of the cambered surface convex shoulder and the lower surface of the cambered sliding surface are both inclined cambered surfaces which are matched with each other.

The working principle and the beneficial effects are as follows: in the utility model, before the hemostix is launched, the cambered surface convex shoulder on the outer wall of the fixing seat of the needle body ejector is limited below the bottom end of the launcher, and at the moment, the longitudinal blocking rib on the inner wall of the shell is positioned above the cambered surface convex shoulder to block the cambered surface convex shoulder, so that before the hemostix is launched, the needle head of the blood taking needle of the needle body ejector is always positioned inside the launcher; when blood sampling and puncture are needed, one end of the hair pusher with a needle head outlet is aligned to the skin to be punctured and is pressed towards the skin after contacting with the skin, in the pressing process, when two arc-shaped sliding surfaces of the hair pusher press down two arc-shaped convex shoulders on the outer wall of a fixed seat of the needle body ejector, the fixed seat (namely, the blood sampling needle) rotates, a spring of the needle body ejector is compressed, when the two arc-shaped convex shoulders rotate to cross the bottoms of two longitudinal blocking ribs, the arc-shaped convex shoulders just enter a longitudinal launching port of the ejector from the arc-shaped sliding surfaces, the pressure on the spring disappears and rebounds and extends (the extending length is larger than the natural length), so that the fixed seat communicated arc-shaped convex shoulders rapidly and linearly move towards the needle head outlet along the longitudinal launching port, when the arc-shaped convex shoulders reach the blind end of the longitudinal launching port, the needle head of the blood sampling needle just, when the spring returns to the natural length, the needle head of the blood taking needle can retract into the needle head outlet of the hair pusher, at the moment, the blood taking device finishes launching, and the puncture is finished.

Therefore, before the blood collector of the utility model is launched, the blood collecting needle is always positioned in the hair pusher, thereby effectively preventing medical staff or other people from contacting the needle head to cause cross infection; in the process of puncture after the hemostix is launched, the skin is quickly punctured after the needle head of the blood taking needle is ejected out of the needle head outlet of the hair pusher, after the puncture is finished, the needle head of the blood taking needle can be quickly rebounded back into the hair pusher by the spring, and a patient cannot see the blood taking needle in the whole process of puncture and after the puncture is finished, so that the fear of the patient (particularly children) is effectively prevented, and the used hemostix cannot stab the hand of a collector because the blood taking needle is exposed outside, otherwise, the cross infection is avoided; when blood is collected, the medical care personnel only need to paste one end of the hair pusher with the needle head outlet on the skin and then press the end to realize the needle insertion, and the operation is very convenient; in addition, the hemostix has simple structure, safety and reliability.

Drawings

FIG. 1 is a perspective view of the push-type hemostix before being launched;

FIG. 2 is a sectional view of the push type hemostix before being fired;

FIG. 3 is a perspective view of the housing;

FIG. 4 is a cross-sectional view of the housing;

FIG. 5 is a top view of the housing;

FIG. 6 is a perspective view of the needle emitter;

FIG. 7 is a front view of the needle launcher;

FIG. 8 is a perspective view of the hair pusher;

figure 9 is a front view of the hair pusher.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Embodiment 1:

this embodiment provides a push type hemostix, as in fig. 1 and 2, this hemostix mainly comprises coaxial assembly's shell 1, hair pusher 2 and needle body catapult 3, as shown in fig. 3 to 5, shell 1 is the cylinder structure with the inner chamber, its one end opening, one end bottom has constant head tank 103, constant head tank 103 bottom sets up location trip 104, the symmetry is equipped with two vertical spacing grooves 101 and two vertical muscle 102 that block on the inner wall of shell 1, vertical spacing groove 101 and vertical muscle 102 that block between be parallel to each other and respectively symmetric distribution in constant head tank 103 both sides, and all with the axis parallel arrangement of shell 1.

As shown in fig. 6 and 7, the needle body ejector 3 mainly comprises a fixed seat 302, a blood taking needle 304 and a spring 301, wherein the blood taking needle 304 is coaxially fixed in the fixed seat 302, the needle head of the blood taking needle extends to the outside of the top end of the fixed seat 302, a pair of cambered surface shoulders 303 are symmetrically arranged on two sides of the outer wall of the fixed seat 302, and a bottom clamping rib 305 is arranged at the bottom of the cambered surface shoulders; the bottom of the spring 301 is fixed with the positioning hook 104 at the bottom in the housing 1, and the top is fixed with the bottom clamping rib 305 at the bottom of the fixing seat 302. After the needle ejector 3 is assembled with the casing 1 and before the needle ejector is fired, the plane of the fixed seat 302 and the cambered surface shoulders 303 on the two sides of the fixed seat and the plane of the positioning groove 103 at the bottom of the casing 1 are the same plane.

As shown in fig. 8 and 9, the hair pusher 2 is a cylinder with an opening at the bottom and a needle outlet 201 at the top, and two bottom openings, a longitudinal launching notch 202 with a blind end at the top, a pair of arc-shaped sliding surfaces 203 matched with the arc-shaped shoulder 303 (the upper surface of the arc-shaped shoulder 303 and the lower surface of the arc-shaped sliding surfaces 203 are both inclined arc surfaces and are matched with each other) and a pair of arc-shaped elastic claws 204 positioned on the outer wall of the bottom opening are symmetrically arranged on the side wall of the hair pusher; the arc-shaped sliding surface 203 is positioned between the longitudinal emission notch 202 and the arc-shaped elastic claw 204, the top end of the arc-shaped sliding surface 203 is connected with the longitudinal emission notch 202, and the bottom end is connected with the bottom end face of the hair pusher 2. A longitudinal guide rib 205 is also arranged above the top ends of the two arc-shaped sliding surfaces 203 and on one side of the longitudinal launching slot 202. The longitudinal launching slot 202 and the longitudinal guide rib 205 are both arranged parallel to the central axis of the housing 1.

The hair pusher 2 is assembled together after being connected with the two longitudinal limit grooves 101 on the inner wall of the shell 1 in a sliding way through the cambered surface elastic claws 204 on the two sides. After the shell 1, the needle body emitter 3 and the hair pusher 2 are assembled together, the longitudinal guide convex rib 205 is positioned outside the longitudinal limiting groove 101, and the longitudinal guide convex rib 205 is tangent to one side of the longitudinal blocking rib 102 far away from the longitudinal limiting groove 101; the fixing base 302 of the needle emitter 3 and the arc-shaped shoulders 303 on both sides of the outer wall thereof are located in the same plane (hereinafter referred to as a first plane) as the positioning groove at the bottom of the housing 1.

The working principle of the push type hemostix is as follows: before the hemostix is launched, two longitudinal limiting grooves 101, two longitudinal blocking ribs 102, two cambered elastic claws 204, two cambered sliding surfaces 203 and two longitudinal guiding convex ribs 205 are respectively distributed on two sides of the first plane in a centrosymmetric manner, and the bottom ends of the cambered sliding surfaces 203, the longitudinal blocking ribs 102 and the longitudinal limiting grooves 101 are all positioned above the cambered convex shoulders 303; when the blood taking device needs to be launched, one end of the hair pusher 2 with the needle outlet 201 is opposite to the place where the skin needs to be punctured, after the hair pusher 2 is pressed, the arc-shaped shoulder 303 is forced to rotate along the arc-shaped sliding surface 203, meanwhile, the spring 301 is compressed and twisted, after the arc-shaped shoulder 303 exceeds the bottom position of the longitudinal blocking rib 102, the longitudinal blocking rib 102 cannot block the arc-shaped shoulder 303, at the moment, the pressure on the spring 301 disappears and the arc-shaped shoulder 303 rebounds and extends (the extending length is larger than the natural length), the arc-shaped shoulder 303 is rapidly and linearly driven towards the direction of the needle outlet 201 along the longitudinal limiting groove 101, meanwhile, the rebounding force of the spring 301 also drives the fixing seat and the blood taking needle in the fixing seat to eject towards the needle outlet 201 until the arc-shaped shoulder 303 is blocked by the blind end of the longitudinal limiting groove 101 to stop moving (at the moment, the plane where the, at this time, the needle of the blood collection needle just exposes out of the needle outlet 201 and pierces the skin, when the spring 301 is restored to the natural length, the needle of the blood collection needle retracts into the needle outlet 201 of the ejector 2, at this time, the blood collection device finishes shooting, and the puncture is finished.

After the hemostix is launched, the longitudinal blocking rib 102 is positioned between the longitudinal guide convex rib 105 and the cambered surface shoulder 303, namely the longitudinal blocking rib 102 is clamped between the longitudinal guide convex rib 105 and the cambered surface shoulder 303; a cambered shoulder 303 is located within the longitudinal emitter notch 202 and between the longitudinal stop rib 102 and the longitudinal restraint slot 101.

Embodiment 2:

this embodiment is a further improvement of embodiment 1, and the main improvements are: in embodiment 1, when the blood collection device is required to shoot the blood collection needle, the pushing device 2 is slightly pressed, so that the blood collection needle 304 can be shot due to the fact that the pushing device 2 is pressed by misoperation when the blood collection device is not required to shoot, the blood collection needle 304 is in a state of being shot at any time, and the blood collection needle is easy to cross-infect and unsafe; however, in the present embodiment, the above-described drawbacks can be solved, specifically:

as shown in fig. 1, 2, 6 and 7, in the blood sampling device of the present embodiment, the needle body ejector 3 further includes torsion bars 306 having two limit shoulders 303 symmetrically disposed at two sides of the middle portion thereof, and the bottom ends of the torsion bars 306 are connected to the top end of the fixing base 301 in a break-point manner. In the housing 1, as shown in fig. 4, the inner lower parts of the two longitudinal limiting grooves 101 are respectively provided with symmetrically distributed transverse limiting convex ribs 105.

Before the hemostix is assembled and launched, the free end of the torsion bar 306 passes through the needle outlet 201 at the top of the hair pusher 2 and then is exposed outside the hair pusher 2 and the shell 1, the two limiting shoulders 303 are positioned inside the hair pusher 2, and the upper surfaces of the two limiting shoulders 303 are propped against the lower surface of the needle outlet 201 at the top of the hair pusher 2; the two cambered surface elastic claws 204 are clamped below the two transverse limiting convex ribs 105; that is, before the hemostix is launched, the pusher 2 is stopped between the lateral stop rib 105 and the stop shoulder 303, thereby effectively preventing the pusher 2 from being pushed and excited in the transportation state. When the hemostix needs to be launched, the free end of the torsion bar 306 is held to rotate, the torsion bar 306 is screwed off from the breakpoint connection at the top end of the fixing seat 302, the two limiting shoulders 303 are rotated to the plane parallel to the needle outlet 201, the torsion bar 306 is pulled out of the hair pusher 2, the hemostix is separated from the torsion bar 306, at the moment, the two cambered surface elastic claws 204 of the hair pusher 2 can slide along the longitudinal limiting groove 101, and then the hair pusher 2 is lightly pressed to launch in the same launching process as that in the embodiment 1, which is not described herein.

Otherwise, this embodiment is identical to embodiment 1, and will not be described herein.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A push type hemostix is characterized by comprising a shell (1), a hair pusher (2) and a needle body ejector (3) which are coaxially assembled; the needle body ejector (3): a bottom spring (301) is fixedly connected with the inner bottom of the shell (1); a pair of cambered surface convex shoulders (303) are symmetrically arranged on two sides of the outer wall of the fixed seat (302);

the hair pusher (2): the needle is a cylinder with an opening at the bottom and a needle outlet (201) at the top, and the side wall of the cylinder is symmetrically provided with two longitudinal launching notches (202) with openings at the bottom ends and blind ends at the top ends, a pair of arc-shaped sliding surfaces (203) matched with the arc-shaped convex shoulders (303) and a pair of arc-shaped elastic clamping claws (204) positioned on the outer wall of the opening at the bottom end;

the housing (1): two longitudinal limiting grooves (101) and two longitudinal blocking ribs (102) are symmetrically arranged on the inner wall of the clamping device, and the two cambered surface elastic clamping jaws (204) are respectively connected with the two longitudinal limiting grooves (101) in a sliding manner;

before the hemostix is launched, the bottom ends of the arc-shaped sliding surface (203), the longitudinal blocking rib (102) and the longitudinal limiting groove (101) are all positioned above the arc-shaped shoulder (303); after launching, the two cambered surface shoulders (303) are respectively positioned in the two longitudinal launching notches (202) and between the longitudinal limiting groove (101) and the longitudinal blocking rib (102).

2. The push type lancing device of claim 1, wherein the arc-shaped sliding surface (203) is located between the longitudinal launching slot (202) and the arc-shaped elastic claw (204).

3. The lancing device of claim 2, wherein the arc-shaped sliding surface (203) has a top end engaged with the longitudinal launching slot (202) and a bottom end engaged with a bottom end face of the pusher (2).

4. The push type hemostix according to claim 3, wherein the hair pusher (2) further has a longitudinal guide rib (205) above the top ends of the two arc-shaped sliding surfaces (203) and on one side of the longitudinal emission notch (202); after the hair pusher (2) is assembled with the shell (1), the longitudinal guide convex rib (205) is positioned outside the longitudinal limiting groove (101), and the longitudinal guide convex rib (205) is tangent to one side, away from the longitudinal limiting groove (101), of the longitudinal blocking rib (102); after the hemostix is launched, the longitudinal blocking rib (102) is positioned between the longitudinal guide convex rib (205) and the cambered surface shoulder (303).

5. The push type blood collector as claimed in claim 1, wherein the bottom of the housing (1) has a positioning groove (103), the two longitudinal position-limiting grooves (101) and the two longitudinal blocking ribs (102) are symmetrically distributed on two sides of the positioning groove (103), the bottom of the positioning groove (103) has a positioning hook (104), and the bottom of the spring (301) is fixed to the positioning hook (104) by a snap fit.

6. The push type blood collector of claim 5, wherein the needle ejector (3) comprises a fixing seat (302), a blood collection needle (304) and a spring (301), and the top end of the spring (301) is fixed with a bottom clamping rib (305) of the fixing seat (302) in a buckling manner; the blood taking needle (304) is coaxially fixed in the fixed seat (302), and the needle head of the blood taking needle extends to the outside of the top end of the fixed seat (302); before the hemostix is launched, the fixed seat (302) and the cambered surface convex shoulders (303) on the two sides of the fixed seat are positioned in the same plane with the positioning groove (103), and after the hemostix is launched, the plane where the fixed seat and the positioning groove are positioned has a preset included angle.

7. The push type hemostix according to claim 6, wherein the needle ejector (3) further comprises a torsion bar (306), two stop shoulders (307) are symmetrically arranged on two sides of the middle of the torsion bar (306), when the hemostix is in a transportation state, the bottom end of the torsion bar (306) is connected with the top end of the fixing base (302) at a break point, and the stop shoulders (307) are located inside the ejector (2) and abut against the lower surface of the needle outlet (201); when the hemostix is in a launching state, the torsion bar (306) is separated from the fixed seat (302).

8. The push type hemostix according to claim 7, wherein in the housing (1), the inner lower parts of the two longitudinal limiting grooves (101) are respectively provided with symmetrically distributed transverse limiting convex ribs (105); when the hemostix is in a transportation state, the two cambered elastic clamping claws (204) are clamped below the two transverse limiting convex ribs (105).

9. The push type hemostix according to any one of claims 1 to 8, wherein the two longitudinal emitting notches (202), the two longitudinal limiting grooves (101) and the two longitudinal blocking ribs (102) are all disposed parallel to the central axis of the housing (1).

10. The push type blood collector of any one of claims 1 to 8, wherein the upper surface of the arc shoulder (303) and the lower surface of the arc sliding surface (203) are both inclined arc surfaces, and are matched with each other.