阅读说明：本技术 一种采血针安全防护机构 (Safety protection mechanism for blood taking needle ) 是由 邹绍俊 邹小龙 于 2019-10-18 设计创作，主要内容包括：本发明公开了一种采血针安全防护机构,包括套管件和收容在套管件内并在套管件内前后滑行的阀芯件,阀芯件具有三个部分：针座部、套接部和止挡部；所述的止挡部上设置有若干限位槽；所述的针座部外侧套设有压缩弹簧,压缩弹簧的一端抵接止挡部,另一端与套管件口部内侧壁抵接；所述阀芯件的止挡部侧壁上设置有一高出第一套管部侧壁的拨片；所述第一套管部侧壁上设置有与拨片相匹配的限位口和滑道；所述第二套管部设置有收容拨片和阀芯件的限位滑腔；所述第二套管部的尾部滑腔内壁上设置有若干与限位槽相匹配的弹性限位凸件。本发明通过拨片设计,可以让医护人员在使用时左右手单手操作。(The invention discloses a safety protection mechanism for a blood taking needle, which comprises a sleeve part and a valve core part which is accommodated in the sleeve part and slides forwards and backwards in the sleeve part, wherein the valve core part comprises three parts: the needle seat part, the sleeve part and the stopping part; the stopping part is provided with a plurality of limiting grooves; a compression spring is sleeved outside the needle seat part, one end of the compression spring is abutted against the stopping part, and the other end of the compression spring is abutted against the inner side wall of the opening part of the sleeve part; a shifting sheet higher than the side wall of the first sleeve part is arranged on the side wall of the stopping part of the valve core piece; the side wall of the first sleeve part is provided with a limiting opening and a slide way which are matched with the shifting sheet; the second sleeve part is provided with a limiting sliding cavity for accommodating the shifting sheet and the valve core piece; and a plurality of elastic limiting convex pieces matched with the limiting grooves are arranged on the inner wall of the tail sliding cavity of the second sleeve part. The medical nursing bed can be operated by the left hand and the right hand by one hand through the design of the poking sheet.)

1. The utility model provides a blood taking needle safety protection mechanism which characterized in that: the valve core component is hollow tubular and comprises three parts: the front part of the blood taking needle is a needle base part connected with the blood taking needle, the rear part of the blood taking needle is a sleeve joint part connected with the catheter, and the middle part of the blood taking needle is a stopping part at least partially higher than the needle base part; the stopping part is provided with a plurality of limiting grooves; a compression spring is sleeved outside the needle seat part, one end of the compression spring is abutted against the stopping part, and the other end of the compression spring is abutted against the inner side wall of the opening part of the sleeve part; the sleeve member has two parts: a first sleeve part positioned at the front section and a second sleeve part positioned at the rear section; a shifting sheet higher than the side wall of the first sleeve part is arranged on the side wall of the stopping part of the valve core piece; the side wall of the first sleeve part is provided with a limiting opening and a slide way which are matched with the shifting sheet; the second sleeve part is provided with a limiting sliding cavity for accommodating the shifting sheet and the valve core piece, and the limiting sliding cavity guides and limits the shifting sheet and the valve core piece to move back and forth; and a plurality of elastic limiting convex pieces matched with the limiting grooves are arranged on the inner wall of the tail sliding cavity of the second sleeve part.

2. The lancet safety shielding mechanism of claim 1, wherein: the stopping part and the section of the shifting sheet are matched with the section of the limiting sliding cavity; the axis of the sliding cavity can be inclined towards the opposite side of the poking piece.

3. The lancet safety shielding mechanism of claim 1, wherein: the first sleeve pipe part and the second sleeve pipe part are connected through one or more structures of sleeving, bonding, clamping and welding.

4. A lancet safety shielding mechanism according to claim 3, wherein: when for cup jointing the connection, first sleeve pipe portion cup joints in the second sleeve pipe portion outside, and the overlap section of first sleeve pipe portion and second sleeve pipe portion has with spacing sliding cavity assorted space.

5. The lancet safety shielding mechanism of claim 1, wherein: the limiting grooves are mutually and continuously formed into a limiting groove of the ring valve core piece.

6. The lancet safety shielding mechanism of claim 1, wherein: the side wall of the first sleeve part is provided with a fin for blood sampling operation; the surface of the fin is provided with a plurality of salient points so as to increase the friction force.

7. The lancet safety shielding mechanism of claim 1, wherein: the wing panel is arranged in front of the gravity center of the protection mechanism.

8. The lancet safety shielding mechanism of claim 1, wherein: the outer side wall of the second sleeve pipe part is provided with a plurality of protruding ridges.

9. The lancet safety shielding mechanism of claim 1, wherein: the first sleeve pipe part is also matched with a safety protective cap which is sleeved on the outer side of the shifting piece.

10. The lancet safety shielding mechanism of claim 1, wherein: the end face of the tail part of the second sleeve part is provided with an inward curled edge to limit the valve core piece from falling off.

Technical Field

The invention relates to a safety protection mechanism of a blood taking needle, and belongs to the technical field of medical safety.

Background

In clinical work, the occurrence of needle stick injuries related to injection is random and uncontrollable, and nursing staff are high-risk groups of needle stick injuries. Social hazards from unsafe injections include pricking others with a needle after use and the social spread of infection caused by improper handling of the injection device after use. Standard prevention was proposed by the American disease control center in 1995, implemented in the United states in 1996 throughout the United states, introduced in 1999 in China and introduced in 2000 in the Hospital infection management code (trial) issued by the Ministry of health. The standard prevention view is that: all patients have infectious blood, body fluids, excretions, secretions, whether or not there is significant contamination of blood stains or contact with non-intact skin mucosa, which requires isolation. Therefore, the large number of disposable lancets is necessary to bring about a problem of safe disposal of the disposable lancets.

The safe blood taking needle used generally at present consists of a vacuum blood taking tube, a blood taking needle, a connecting tube and a needle holder. The vacuum blood collection tube is a main component and is mainly used for collecting and preserving blood samples. A certain amount of negative pressure is preset in the production process of the vacuum blood collection tube, and after the blood collection needle punctures into a blood vessel, blood automatically flows into the blood collection tube due to the action of the negative pressure in the blood collection tube. In order to ensure that the used blood taking needle does not hurt medical staff, a safety protection sleeve is also arranged. The existing safety protection sleeve is provided with a sleeve type protection sleeve, and the safety protection sleeve is difficult to be used for the needle and is easy to accidentally injure. The retractable safety protection sleeve is worn outside the blood taking needle, the blood taking needle moves towards the needle point direction through the wing piece arranged on the side of the needle seat along the slide way on the side wall of the protection sleeve when in use, and the blood taking needle is limited after being pushed to a proper position and then is subjected to blood taking operation. After the operation is finished, the blood taking needle is pulled back into the safety protection sleeve, so that the purpose of safety protection is realized. However, the safety protection sleeve has the following defects: the left hand and the right hand can not be operated independently, and the cooperation of both hands is needed, which brings inconvenience to the medical staff.

Disclosure of Invention

The present invention is directed to a safety protection mechanism for a blood lancet to solve the above problems of the prior art.

The purpose of the invention is realized by the following technical scheme.

The utility model provides a blood taking needle safety protection mechanism, includes the casing and accomodates the case spare that slides around in the casing and in the casing, case spare be hollow tube form, case spare has three parts: the front part of the blood taking needle is a needle base part connected with the blood taking needle, the rear part of the blood taking needle is a sleeve joint part connected with the catheter, and the middle part of the blood taking needle is a stopping part at least partially higher than the needle base part; the stopping part is provided with a plurality of limiting grooves; a compression spring is sleeved outside the needle seat part, one end of the compression spring is abutted against the stopping part, and the other end of the compression spring is abutted against the inner side wall of the opening part of the sleeve part; the sleeve member has two parts: a first sleeve part positioned at the front section and a second sleeve part positioned at the rear section; a shifting sheet higher than the side wall of the first sleeve part is arranged on the side wall of the stopping part of the valve core piece; the side wall of the first sleeve part is provided with a limiting opening and a slide way which are matched with the shifting sheet; the second sleeve part is provided with a limiting sliding cavity for accommodating the shifting sheet and the valve core piece, and the limiting sliding cavity guides and limits the shifting sheet and the valve core piece to move back and forth; and a plurality of elastic limiting convex pieces matched with the limiting grooves are arranged on the inner wall of the tail sliding cavity of the second sleeve part.

The stopping part and the section of the shifting sheet are matched with the section of the limiting sliding cavity. The axis of the sliding cavity can be inclined towards the opposite side of the poking piece. Therefore, when the blood taking needle is in a push-out state, the needle head inclines towards the human body, and the blood taking of medical staff is facilitated.

The first sleeve pipe part and the second sleeve pipe part are connected through one or more structures of sleeving, bonding, clamping and welding.

More specifically, when for cup jointing the connection, first sleeve pipe portion cup joints in the second sleeve pipe portion outside, and the overlap portion of first sleeve pipe portion and second sleeve pipe portion has with spacing smooth chamber assorted space.

The limiting grooves are mutually and continuously formed into a limiting groove of the ring valve core piece.

The side wall of the first sleeve part is provided with a fin for blood sampling operation. The surface of the fin is provided with a plurality of salient points so as to increase the friction force.

In order to facilitate the blood sampling operation, the wing panel is arranged at the front part of the gravity center position of the protection mechanism, so that the force can be applied conveniently in the use process, and the wing panel cannot shake.

The lateral wall of second sleeve pipe portion on be provided with a plurality of protruding stupexes, increase intensity on the one hand, on the other hand increases frictional force to the one-hand blood sampling operation of being convenient for.

The first sleeve pipe part is also matched with a safety protective cap which is sleeved on the outer side of the shifting piece. More specifically, the mouth of the helmet abuts against the second sleeve portion.

The end face of the tail part of the second sleeve part is provided with an inward curled edge to limit the valve core piece from falling off.

The front direction in the invention refers to the direction of the needle head of the blood taking needle; the term "rear" or "tail" refers to a direction away from the needle.

The invention has the beneficial effects that:

1. the medical care personnel can operate with one hand by the left hand and the right hand when using the medical care personnel through the design of the poking sheet;

2. the casing piece is arranged into two parts, and the heights of the casing piece are different, so that an operation area comprising the shifting piece and the limiting port is arranged near the second casing pipe part, the difficulty of abnormal touch of the shifting piece and a human body is increased, and the reliability is increased;

3. the shifting sheet slides in the limiting sliding cavity in the second sleeve pipe part in the whole retreating process, so that misoperation can be prevented to the greatest extent;

4. through special safety helmet, the plectrum device is protected in the safety helmet, and the retraction of the blood taking needle caused by misoperation is avoided.

Drawings

FIG. 1 is a schematic view of the mounting structure of the present invention;

FIG. 2 is a schematic assembled structure of the valve core member and the sleeve member (without the blood collection needle and the safety cap) of the present invention;

FIG. 3 is a schematic structural view of the valve core member of the present invention;

in the figures, 10, the sleeve member; 11. a first sleeve portion; 12. a second sleeve portion; 13. a limiting port; 14. a fin; 15. convex edges; 16. an elastic limit convex part; 17. a limiting sliding cavity; 20. a spring; 30. a valve core piece; 31. a needle seat portion; 32. a stopper portion; 33. a socket joint part; 34. a limiting groove; 35. a shifting sheet; 40. a safety helmet.

Detailed Description

The structural features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

A lancet safety protecting mechanism shown in fig. 1-3 comprises a sleeve member 10 and a valve core member 30 housed in the sleeve member 10 and sliding back and forth in the sleeve member 10, wherein the valve core member is hollow and tubular, and has three parts: the front part of the blood taking needle is a needle seat part 31 connected with the blood taking needle, the rear part of the blood taking needle is a sleeve joint part 33 connected with the catheter, and the middle part of the blood taking needle is a stopping part 32 which is at least partially higher than the needle seat part 31; the stop portion 32 is provided with a plurality of limit grooves 34; the outer side of the needle seat part 31 is sleeved with a compression spring 20, one end of the compression spring 20 is abutted against a stopping part 32, and the other end is abutted against the inner side wall of the opening of the sleeve member 10; the sleeve member 10 has two parts: a first casing pipe portion 11 at the front section and a second casing pipe portion 12 at the rear section; a shifting sheet 35 higher than the side wall of the first sleeve pipe part 11 is arranged on the side wall of the stopping part 32 of the valve core piece 30; the side wall of the first sleeve part is provided with a limiting opening 13 and a slide way which are matched with the shifting piece 35; the second sleeve part 12 is provided with a limiting sliding cavity for accommodating the shifting sheet 35 and the valve core member 30, and the limiting sliding cavity 17 guides and limits the shifting sheet 35 and the valve core member 30 to move back and forth; the tail limiting sliding cavity 17 of the second sleeve part 12 is provided with a plurality of elastic limiting convex parts 16 matched with the limiting grooves 34.

The cross sections of the stopping part 32 and the shifting sheet are matched with the cross section of the limiting slide cavity 17. The axis of the sliding cavity can be inclined towards the opposite side of the poking piece. Therefore, when the blood taking needle is in a push-out state, the needle head inclines towards the human body, and the blood taking of medical staff is facilitated.

The first sleeve pipe part 11 and the second sleeve pipe part 12 are connected through one or more structures of sleeving, bonding, clamping and welding.

More specifically, when the sleeve connection is performed, the first sleeve part 11 is sleeved outside the second sleeve part 12, and the overlapping portion of the first sleeve part 11 and the second sleeve part 12 has a space matched with the limiting sliding cavity 17.

The limiting grooves 34 are mutually connected to form a limiting groove 34 of the ring valve core piece.

The side wall of the first sleeve part 11 is provided with a fin 14 for blood sampling operation. The surface of the fin 14 is provided with a plurality of salient points to increase the friction force.

In order to facilitate the blood sampling operation, the wing panel is arranged at the front part of the gravity center position of the protection mechanism, so that the force can be applied conveniently in the use process, and the wing panel cannot shake.

The outer side wall of the second sleeve pipe part 12 is provided with a plurality of protruding ridges 15, so that the strength is increased, and the friction force is increased on the other hand, so that the blood sampling operation can be conveniently carried out by one hand.

The first sleeve part 12 is also matched with a safety helmet 40, and the safety helmet 40 is sleeved on the outer side of the shifting piece. More specifically, the mouth of the helmet 40 abuts the second sleeve portion 12. The syringe needle can be protected on the one hand, and on the other hand can protect the plectrum not to touch by mistake.

The end face of the tail part of the second sleeve part 12 is provided with an inward curled edge to limit the valve core part 30 from falling off.

During installation, the safety helmet is sleeved on the first sleeve pipe part. Install blood taking needle and pipe respectively to the needle file portion and the portion of cup jointing of case spare on, the spring cup joints in the needle file portion outside, puts into first sleeve pipe portion in the lump to dial the plectrum to spacing mouthful department. The second sleeve portion is fixed to the first sleeve portion.

After the blood sampling is finished, the shifting sheet is shifted to the slide way, the valve core piece retreats into the second sleeve pipe part under the action of the spring, and the limiting groove is meshed with the elastic limiting convex piece.