Disposable puncture-proof blood taking needle

Abstract

The utility model relates to the field of medical instruments, in particular to a disposable puncture-proof blood taking needle which comprises a blood taking needle and a hose connected with the blood taking needle, the blood taking needle is connected with the hose through a connecting piece, and a needle handle is arranged on one side of the connecting piece. Through holes are formed in the two ends of the puncture-proof connecting base, the blood taking needle and the hose penetrate through the through holes, a through groove is formed in one side of the puncture-proof connecting base, the needle handle of the connecting piece is located in the through groove, the through groove is of a three-section structure, the first through groove section and the second through groove section are in slope transition, and the second through groove section and the third through groove section are in slope transition. And a bayonet is arranged above the transition part of the second section of through groove and the third section of through groove, so that the needle handle is clamped after entering the third section of through groove, and the springback is prevented. The puncture-proof blood taking needle has the advantages that the blood taking needle can be stored and limited in the puncture-proof connecting base after blood taking work is completed, and the risk that a needle head is exposed outside after the blood taking work is completed, and workers are punctured accidentally is avoided.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a disposable anti-needle puncture blood collection needle. Background Art

[0002] A lancet is an instrument used to collect blood samples in medical tests. It consists of a needle and a needle rod. Its development has evolved from a lancet to a plastic compression molded needle, and then to a mechanical lancet and a laser lancet. There are different models and classifications of lancets, such as a split lancet, which is a disposable blood collection tool commonly used in clinical practice. It uses mechanical devices or laser technology to accurately, quickly, and appropriately pierce the skin, greatly reducing the patient's pain and improving the safety and convenience of the blood collection process.

[0003] However, there are technical problems with the blood collection needles in the prior art. After the blood collection work is completed, the blood collection needle needs to be scrapped, and the exposed blood collection needle needle increases the risk of accidental puncture of the staff. The blood remaining on the needle increases the risk of infection after the staff is punctured.

[0004] Chinese patent CN202122480555.9 provides an ejection-type puncture-proof blood collection needle, which specifically discloses that the blood collection needle includes a first needle head, a needle seat, and a hose connected in sequence, a needle wing is provided on one side of the needle seat, a first protective sleeve is sleeved on the needle seat, an axial needle wing through hole is provided on the first protective sleeve, the end of the first protective sleeve close to the hose is connected to the annular protective sleeve seat, a card slot is provided on the inner wall of the protective sleeve seat, and an elastic sheet and a boss are provided on the end of the needle seat close to the hose, the elastic sheet is engaged with the card slot when it is ejected, and separated from the card slot when it is pressed down, a first spring facing the protective sleeve is connected to the boss, and a press switch for compressing the elastic sheet is provided on the side wall of the boss. However, this technical solution has extremely high requirements on processing accuracy, and it is necessary to completely change the structure of the existing blood collection needle to re-produce the blood collection needle, which has extremely high production costs. In order to overcome the limit between the protective sleeve and the boss during blood collection, it is also necessary to cooperate with both hands to operate, which is not conducive to convenient operation.

[0005] Chinese patent CN202121248035.9 provides a puncture-proof blood collection needle, which specifically discloses that when collecting blood, the sliding handle is at the end of the sliding groove away from the venous blood collection needle. At this time, the inner cylinder is completely embedded in the outer cylinder, and the venous blood collection needle is exposed. At the same time, the test tube is inserted into the groove of the sleeve, and the test tube pushes the baffle to push the baffle toward the bottom surface of the groove of the sleeve. The puncture needle passes through the needle hole on the baffle and enters the test tube. When the baffle is pushed to the bottom of the groove, the elastic member is compressed, and the baffle is stuck at the bottom of the groove to prevent the baffle from rebounding; after the blood collection is completed, the sliding handle is pushed from the end away from the venous blood collection needle to the other end, and the inner cylinder is driven to slide, so that the inner cylinder completely covers the venous blood collection needle to prevent the venous blood collection needle from stabbing medical staff, and the test tube is removed so that the baffle is no longer stuck in the middle of the groove. Under the action of the rebound force of the elastic member, the baffle automatically rebounds and blocks the puncture needle to prevent the puncture needle from stabbing medical staff. The protective structure of the venous blood collection needle cannot be limited. Although the inner tube can be pushed out to cover the blood collection needle after blood collection is completed, it may be displaced during transportation, causing the inner tube of the blood collection needle to move back, causing the blood collection needle to be exposed again, increasing the risk of injuring the staff.

[0006] There is an urgent need to design a blood collection needle that can be covered and the needle tip can be stably limited and not exposed after blood collection is completed. Utility Model Content

[0007] The utility model aims to overcome the deficiencies of the prior art and provide a disposable anti-needle puncture blood collection needle, which is used to hide the limit needle after the blood collection operation is completed to prevent the needle from being exposed and accidentally stabbing the staff.

[0008] In order to achieve the above-mentioned purpose, a disposable anti-needlestick blood collection needle is designed, comprising a blood collection needle and a hose connected to the blood collection needle, the blood collection needle being connected to the hose through a connecting piece, and a needle handle is provided on one side of the connecting piece; it also includes an anti-puncture connecting seat, through holes are provided at both ends of the anti-puncture connecting seat for the blood collection needle and the hose to pass through, a through groove is provided on one side of the anti-puncture connecting seat, the needle handle of the connecting piece is located in the through groove, the through groove is a three-section structure, the first section of the through groove and the second section of the through groove adopt an inclined transition, the second section of the through groove and the third section of the through groove adopt an inclined transition, and a bayonet is provided above the transition between the second section of the through groove and the third section of the through groove, so that the needle handle is stuck after entering the third section of the through groove to prevent rebound.

[0009] Preferably, the needle handle of the utility model has a trapezoidal cross-section, with inclined surfaces on both sides, and the width of the needle handle on the side away from the blood collection needle is greater than the width on the side close to the blood collection needle.

[0010] Preferably, the length of the first section of the through groove of the utility model matches the width of the needle handle, and the slope of the inclined surface between the first section of the through groove and the second section of the through groove is sufficient to support the force of the blood collection needle during puncture.

[0011] Preferably, the second section of the through groove of the utility model is located above the first section of the through groove and the third section of the through groove, the second section of the through groove and the third section of the through groove transition to a downward inclined surface, a triangular block is provided above the second section of the through groove and the third section of the through groove, the hypotenuse of the triangular block forms a transition, and the straight edge of the triangular block forms a bayonet.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] Through the design of the through groove, the bayonet and the needle handle, the blood collection needle can be stored and limited in the puncture-proof connecting seat after the blood collection work is completed, avoiding the risk of the needle being exposed to the outside after the blood collection work is completed, and causing accidental stabbing of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 , is a three-dimensional diagram of the utility model;

[0015] Figure 2 , is a cross-sectional view of the utility model;

[0016] In the figure: 1 blood collection needle; 2 hose; 3 needle handle; 3.1 connecting piece; 4 puncture-proof connecting seat; 5 through slot; 5.1 first section through slot; 5.2 second section through slot; 5.3 third section through slot; 5.4 bayonet. DETAILED DESCRIPTION

[0017] In order to make the purpose, principle and structure of the utility model clearer, it is further described below in conjunction with the drawings and specific embodiments.

[0018] The utility model provides a kind of, comprising: a disposable anti-needle puncture blood collection needle, comprising a blood collection needle 1 and a hose 2 connected with the blood collection needle, the blood collection needle is connected to the hose 2 through a connecting piece 3.1, and a needle handle 3 is arranged on one side of the connecting piece 3.1; and also comprising an anti-puncture connecting seat 4, through holes are arranged at both ends of the anti-puncture connecting seat 4 for the blood collection needle 1 and the hose 2 to pass through, a through groove 5 is arranged on one side of the anti-puncture connecting seat 4, the needle handle 3 of the connecting piece 3.1 is located in the through groove 5, the through groove 5 is a three-section structure, the first section through groove 5.1 and the second section through groove 5.2 adopt an inclined transition, the second section through groove 5.2 and the third section through groove 5.3 adopt an inclined transition, and a bayonet 5.4 is arranged above the transition between the second section through groove 5.2 and the third section through groove 5.3, so that the needle handle 3 is clamped after entering the third section through groove 5.3 to prevent rebound.

[0019] The needle handle 3 has a trapezoidal cross section, with inclined surfaces on both sides, and the width of the needle handle 3 away from the blood collection needle 1 is greater than the width of the side close to the blood collection needle. The length of the first section through groove 5.1 matches the width of the needle handle 3, and the slope of the inclined surface between the first section through groove 5.1 and the second section through groove 5.2 is sufficient to support the force of the blood collection needle 1 during puncture. The second section through groove 5.2 is located above the first section through groove 5.1 and the third section through groove 5.3, and the second section through groove 5.2 and the third section through groove 5.3 transition to a downward inclined surface, and a triangular block is provided above the second section through groove 5.2 and the third section through groove 5.3, the oblique side of the triangular block forms a transition, and the straight side of the triangular block forms a bayonet 5.4.

[0020] When blood collection is required, the hand holds the puncture-proof connecting seat 4, and the thumb presses on the needle handle 3. At the same time, the needle handle 3 and the inclined surface of the first section through groove 5.1 cooperate with each other to abut against each other, and the thumb and the inclined surface abut against each other to provide a supporting force to counteract the reaction force generated when the blood collection needle punctures the skin, thereby preventing the blood collection needle from retreating during the blood collection operation.

[0021] When the blood collection is completed and the blood collection needle 1 needs to be stored, the needle handle 3 is pulled along the through groove 5 to move away from the needle tip of the blood collection needle. The needle handle 3 first breaks through the inclined surface between the first through groove 5.1 and the second through groove 5.2, and then breaks through the inclined surface between the second through groove 5.2 and the third through groove 5.3, and finally falls into the third through groove 5.3. At this time, the needle tip of the blood collection needle is completely stored in the puncture-proof connection seat 4. A bayonet 5.4 formed by a block is provided between the third through groove 5.3 and the second through groove 5.2. The bayonet forms a limit for the needle handle 3 to prevent the needle handle 3 from leaving the third through groove 5.3 again, thereby limiting the movement of the blood collection needle 1 connected thereto, so that the needle tip is always stored in the puncture-proof connection seat 4, avoiding the risk of accidental puncture of the staff by the needle tip being exposed to the outside.

[0022] The above is only a specific implementation method of this utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical solution and new concept of the utility model, shall be covered by the protection scope of the utility model.

Claims

1. A disposable anti-needle puncture blood collection needle, comprising a blood collection needle and a hose connected to the blood collection needle, characterized in that The blood collection needle is connected to the hose via a connector, and a needle handle is provided on one side of the connector; Also includes The puncture-proof connecting seat has through holes at both ends for the blood collection needle and the hose to pass through. A through groove is provided on one side of the puncture-proof connecting seat, and the needle handle of the connecting piece is located in the through groove. The through groove is a three-section structure. The first section of the through groove and the second section of the through groove adopt an inclined transition, and the second section of the through groove and the third section of the through groove adopt an inclined transition. A bayonet is provided above the transition between the second section of the through groove and the third section of the through groove, so that the needle handle can be stuck after entering the third section of the through groove to prevent rebound.

2. A disposable anti-needlestick blood collection needle as claimed in claim 1, characterized in that The needle handle is trapezoidal in cross section, with inclined surfaces on both sides, and the width of the needle handle away from the blood collection needle is greater than the width of the needle handle close to the blood collection needle.

3. A disposable anti-needlestick blood collection needle as claimed in claim 1, characterized in that The length of the first section of the through groove matches the width of the needle handle, and the slope of the inclined surface between the first section of the through groove and the second section of the through groove is sufficient to support the force applied by the blood collection needle during puncture.

4. A disposable anti-needlestick blood collection needle as claimed in claim 1, characterized in that The second section of the through groove is located above the first section of the through groove and the third section of the through groove, and the second section of the through groove and the third section of the through groove transition to a downward inclined surface. A triangular clamping block is provided above the second section of the through groove and the third section of the through groove, and the hypotenuse of the triangular clamping block forms a transition, and the straight edge of the triangular clamping block forms a bayonet.

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