Safety needle sliding sleeve tension detection method

Abstract

The invention relates to the technical field of safety needles, in particular to a safety needle sliding sleeve tension detection method, which comprises the following steps of S1, simultaneously fixing a needle handle, a fin, a catheter and a needle holder, pulling an outer sliding sleeve, enabling a second buckle to be separated from a third clamping groove, enabling the second buckle to be located between the third clamping groove and a fourth clamping groove, and recording the maximum tension; s2, pulling the needle sheath to enable the needle sheath to be separated from the head of the needle handle; s3, the inner sliding sleeve is pulled, so that the first buckle is disengaged from the first clamping groove, the first buckle is located between the first clamping groove and the second clamping groove, and the maximum pulling force is recorded; s4, the outer sliding sleeve is pushed, the first buckle is embedded into the first clamping groove, the second buckle is embedded into the third clamping groove, and resetting of the inner sliding sleeve and the outer sliding sleeve is completed; and S5, pushing the needle sheath to enable the needle sheath to sleeve the head of the needle handle, and completing resetting of the needle sheath. The detection efficiency is high, the detection result is accurate, and the tension of the safety needle sliding sleeve can be comprehensively detected.

Description

Technical Field

[0001] The invention relates to the technical field of safety needles, and in particular to a method for detecting the tensile force of a safety needle sliding sleeve. Background Art

[0002] After using injection needles, blood collection needles, dispensing needles, flushing needles and other medical needles, most people will just throw them away. Since traditional injection needles, blood collection needles, dispensing needles, flushing needles and other medical needles do not have safety protection devices, when cleaning up waste and recycling, workers are often injured by needle sticks, and there is also a risk of cross infection. For this reason, professionals have designed a variety of safety needles that can hide the needles after use to prevent harm to the human body. The sliding sleeve protection safety needle is one of them that is very convenient to operate.

[0003] The so-called sliding sleeve protection safety needle Z00, such as Figure 1-Figure 3 As shown, it includes a needle handle Z01 and a needle Z14 inserted in the needle handle Z01. The needle handle Z01 connects the needle Z14 with one end of the catheter Z12. The needle handle Z01 is provided with a wing Z04, and the other end of the catheter Z12 is connected to the needle holder Z13. The sliding sleeve protection safety needle Z00 also includes an inner sliding sleeve Z05, an outer sliding sleeve Z09 and a needle shield Z11 sleeved on the needle handle Z01. The factory state of the safety needle Z00 is that the inner sliding sleeve Z05 and the outer sliding sleeve Z09 are sleeved on the root of the needle handle Z01 in sequence, and the needle shield Z11 is sleeved on the head of the needle handle Z01 and protects the needle Z14. When in use, the medical staff removes the needle shield Z11 and can use it like an ordinary needle. Before discarding after use, the medical staff only needs to gently pull the outer sliding sleeve Z09 to make the outer sliding sleeve Z09 and the inner sliding sleeve Z05 unfold in sequence to protect the needle Z14. In this way, the needle Z14 will not injure the staff during the garbage transfer and processing, so it is called the safety needle Z00.

[0004] In order to prevent the inner sleeve Z05 and the outer sleeve Z09 from sliding randomly and affecting normal use, or from retracting under external force to expose the needle Z14 after being pulled apart when discarded, it is necessary to provide a locking mechanism on the needle handle Z01, the inner sleeve Z05 and the outer sleeve Z09. The locking mechanism includes a first card slot Z02 provided on the rear outer surface of the needle handle Z01, a second card slot Z03 provided on the front outer surface of the needle handle Z01, a first buckle Z06 provided on the rear of the inner sleeve Z05, a third card slot Z07 provided on the rear outer surface of the inner sleeve Z05, a fourth card slot Z08 provided on the front outer surface of the inner sleeve Z05, and a second buckle Z10 provided on the rear of the outer sleeve Z09. In the factory state, the first card slot Z02 and the first buckle Z06, the third card slot Z07 and the second buckle Z10 are respectively engaged with each other and are in a locked state, such as Figure 1When it is necessary to discard and pull it apart, the first buckle Z06 and the second slot Z03, the second buckle Z10 and the fourth slot Z08 are respectively engaged with each other in a locked state, as shown in FIG. Figure 2 As shown, it will not retract.

[0005] Since the inner sleeve, outer sleeve and needle handle are generally made of plastic, their slots and buckles cannot guarantee precise fit, and the safety needle needs to be connected to adjacent parts by gluing on the production line. The inner sleeve, outer sleeve and needle handle may be too tight when shipped. If the medical staff cannot easily pull the sleeve, the environmental protection requirements for discarding the safety needle cannot be met. Therefore, it is very important to control the sleeve tension of each safety needle within the standard requirements, and whether it meets the requirements needs to be pulled before delivery.

[0006] Safety needles are disposable consumables and are used in large quantities. Therefore, there is an urgent need for a safety needle sleeve tension detection method that can efficiently and accurately perform comprehensive detection of the safety needle sleeve tension. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a method for detecting the tension of a safety needle sliding sleeve, so as to perform efficient and accurate comprehensive detection of the tension of the safety needle sliding sleeve.

[0008] The technical solution of the present invention to solve the above technical problems is as follows:

[0009] A method for detecting the tension of a safety needle sleeve, comprising a tension detection device, wherein the safety needle comprises a needle handle and a needle inserted in the needle handle, the needle handle connects the needle with one end of a catheter, the needle handle is provided with a wing, and the other end of the catheter is connected to a needle holder; the safety needle also comprises an inner sleeve, an outer sleeve and a needle sheath sleeve sleeved on the needle handle; a locking mechanism is arranged on the needle handle, the inner sleeve and the outer sleeve, and the locking mechanism comprises a first card groove arranged on the outer surface of the rear part of the needle handle, a second card groove arranged on the outer surface of the front part of the needle handle, a first buckle arranged on the rear part of the inner sleeve, a third card groove arranged on the outer surface of the rear part of the inner sleeve, a fourth card groove arranged on the outer surface of the front part of the inner sleeve, and a second buckle arranged on the rear part of the outer sleeve; when the safety needle is in the factory state, the first card groove and the first buckle, the third card groove and the second buckle are respectively engaged with each other and are in a locked state;

[0010] The safety needle sliding sleeve tension detection method comprises the following steps:

[0011] S1. Fix the needle handle, wing, catheter and needle holder at the same time, and pull the outer sleeve through the tension detection device to make the second buckle disengage from the third slot and make the second buckle be located between the third slot and the fourth slot; when pulling the outer sleeve, record the maximum tension;

[0012] S2, pull the needle shield to separate the needle shield from the head of the needle handle;

[0013] S3, pulling the inner sleeve by the tension detection device to make the first buckle disengage from the first slot and make the first buckle be located between the first slot and the second slot; when pulling the inner sleeve, recording the maximum tension;

[0014] S4, pushing the outer sliding sleeve, the outer sliding sleeve drives the inner sliding sleeve to move toward the root of the needle handle, so that the first buckle is embedded in the first clamping groove, and the second buckle is embedded in the third clamping groove, completing the reset of the inner sliding sleeve and the outer sliding sleeve;

[0015] S5. Push the needle shield so that the needle shield is sleeved on the head of the needle handle, thereby completing the resetting of the needle shield.

[0016] Furthermore, in S1 and S3, when the outer sliding sleeve and the inner sliding sleeve are pulled, the pulling force ranges from 3 to 10N.

[0017] The beneficial effect of adopting the above technical scheme is that the pulling force and the pulling position of the outer sleeve and the inner sleeve are controlled to prevent the outer sleeve and the inner sleeve from being pulled to a locked state when they are discarded, and being scrapped as a whole and unable to be restored; the safety needle sleeve tension detection method of the present invention has high detection efficiency and accurate detection results, and can comprehensively detect the tension of the safety needle sleeve.

[0018] Furthermore, in S4, when the outer sleeve drives the inner sleeve to move toward the root of the needle handle, the first buckle is first engaged in the first slot to complete the resetting of the inner sleeve, and then the second buckle is engaged in the third slot to complete the resetting of the outer sleeve.

[0019] The beneficial effect of adopting the above technical solution is that the inner sleeve and the outer sleeve can be reset in sequence by pushing the outer sleeve.

[0020] Furthermore, in S1, the stroke of pulling the outer sliding sleeve is 1 / 5 to 1 / 3 of the length of the outer sliding sleeve.

[0021] Furthermore, in S1, the stroke of pulling the outer sliding sleeve is 3 to 5 mm.

[0022] The beneficial effect of adopting the above technical solution is that the pulling stroke of the outer sleeve is controlled to prevent the outer sleeve from being pulled to a locked state when it is discarded, thereby causing the entire sleeve to be scrapped and unable to be restored.

[0023] Furthermore, in S3, the stroke of pulling the inner sleeve is 1 / 5 to 1 / 3 of the length of the inner sleeve.

[0024] Furthermore, in S3, the stroke of pulling the inner sliding sleeve is 3 to 5 mm.

[0025] The beneficial effect of adopting the above technical solution is that the pulling stroke of the inner sliding sleeve is controlled to prevent the inner sliding sleeve from being pulled to a locked state when it is discarded, and being completely scrapped and unable to be restored.

[0026] Furthermore, the safety needle sliding sleeve tension detection method further includes the following steps:

[0027] S6. Perform finished product visual inspection on the safety needle after it is reset in S5 to check whether the inner sliding sleeve, the outer sliding sleeve and the needle sheath of the safety needle have been reset;

[0028] S7. If the detection result is that the safety needle has been reset, the reset safety needle will be transferred to the next process; if the detection result is that the safety needle has not been reset, the safety needle that has not been reset will be removed and reset again.

[0029] The beneficial effect of adopting the above technical solution is that during the visual inspection of the finished product, it can be detected whether the inner sliding sleeve, the outer sliding sleeve and the needle sheath of the safety needle have been reset.

[0030] Furthermore, the safety needle sliding sleeve tension detection method further includes the following steps:

[0031] S8, performing an air tightness test on the safety needle that has been reset as detected by S7 to check whether the safety needle is leaking;

[0032] S9. If the test result is no leakage, the safety needle without leakage will be transferred to the next process; if the test result is leakage, the safety needle with leakage will be removed and reprocessed.

[0033] The beneficial effect of adopting the above technical solution is that during the air tightness detection process, the safety needle can be detected for air leakage, especially at the pushed and pulled parts.

[0034] Furthermore, the tension detection device comprises a tension gauge and a chuck, wherein the chuck is connected to the front end of the tension gauge, and the chuck is used to clamp the outer sliding sleeve or the inner sliding sleeve.

[0035] The beneficial effect of adopting the above technical solution is that the outer sleeve or the inner sleeve is clamped by the chuck of the tension detection device respectively, so as to realize the pulling and tension detection of the outer sleeve or the inner sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure of the safety needle in the factory state;

[0037] Figure 2 It is a schematic diagram of the structure when the safety needle is in a discarded and pulled-out state;

[0038] Figure 3 It is a schematic diagram of the explosion structure of the safety needle;

[0039] Figure 4 It is a structural schematic diagram of the tension detection device of the present invention.

[0040] Explanation of the reference numerals: Z00, safety needle; Z01, needle handle; Z02, first slot; Z03, second slot; Z04, wing; Z05, inner sleeve; Z06, first buckle; Z07, third slot; Z08, fourth slot; Z09, outer sleeve; Z10, second buckle; Z11, needle sheath; Z12, catheter; Z13, needle holder; Z14, needle; L00, tension detection device; L01, dynamometer; L02, chuck. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] The embodiment of the invention discloses a method for detecting the tension of a safety needle sliding sleeve.

[0043] Safety needle Z00 structural reference Figure 1-Figure 3 Specifically, the structure of the safety needle Z00 in the factory state is referenced Figure 1 ; Structural reference for safety needle Z00 when it is in the discarded and pulled out state Figure 2 .

[0044] A method for detecting the tension of a safety needle sleeve, comprising a tension detection device L00, wherein the safety needle Z00 comprises a needle handle Z01 and a needle Z14 inserted in the needle handle Z01, wherein the needle handle Z01 connects the needle Z14 with one end of a catheter Z12, wherein a wing Z04 is provided on the needle handle Z01, and the other end of the catheter Z12 is connected to a needle holder Z13; the safety needle Z00 further comprises an inner sleeve Z05, an outer sleeve Z09 and a needle sheath Z11 sleeved on the needle handle Z01; the needle handle Z01, the inner sleeve Z05 and the needle sheath Z11 are sleeved on the needle handle Z01; the needle handle Z01, the inner sleeve Z09 ... A locking mechanism is arranged on Z05 and the outer sleeve Z09, and the locking mechanism comprises a first card groove Z02 arranged on the outer surface of the rear part of the needle handle Z01, a second card groove Z03 arranged on the outer surface of the front part of the needle handle Z01, a first buckle Z06 arranged on the rear part of the inner sleeve Z05, a third card groove Z07 arranged on the outer surface of the rear part of the inner sleeve Z05, a fourth card groove Z08 arranged on the outer surface of the front part of the inner sleeve Z05, and a second buckle Z10 arranged on the rear part of the outer sleeve Z09; the safety needle Z00 is in the factory state, refer to Figure 1 , the first card slot Z02 and the first buckle Z06, the third card slot Z07 and the second buckle Z10 are respectively engaged with each other and are in a locked state;

[0045] Reference Figure 4The tension detection device L00 includes a tension meter L01 and a chuck L02, wherein the chuck L02 is connected to the front end of the tension meter L01, and the chuck L02 is used to clamp the outer sleeve Z09 or the inner sleeve Z05; the chuck L02 of the tension detection device L00 clamps the outer sleeve Z09 or the inner sleeve Z05 respectively, so as to realize the pulling and tension detection of the outer sleeve Z09 or the inner sleeve Z05;

[0046] Specifically, the safety needle sliding sleeve tension detection method comprises the following steps:

[0047] S1. Fix the needle handle Z01, the wing Z04, the catheter Z12 and the needle holder Z13 at the same time, and pull the outer sleeve Z09 through the tension detection device L00 to make the second buckle Z10 disengage from the third slot Z07, and make the second buckle Z10 be located between the third slot Z07 and the fourth slot Z08; when pulling the outer sleeve Z09, record the maximum tension, which is the tension when the second buckle Z10 disengages from the third slot Z07;

[0048] When the outer sleeve Z09 is pulled, the pulling force ranges from 3 to 10 N; the stroke of pulling the outer sleeve Z09 is 1 / 5 to 1 / 3 of the length of the outer sleeve Z09; further, the stroke of pulling the outer sleeve Z09 is 3 to 5 mm;

[0049] The pulling force and pulling position (i.e. pulling stroke) of the outer sleeve Z09 are controlled to prevent the outer sleeve Z09 from being pulled to a locked state when it is discarded, and thus being completely discarded and unable to be restored;

[0050] S2, pull the needle sheath Z11 to separate the needle sheath Z11 from the head of the needle handle Z01;

[0051] S3. Pull the inner sleeve Z05 by the tension detection device L00 to make the first buckle Z06 come out of the first slot Z02, and make the first buckle Z06 be located between the first slot Z02 and the second slot Z03; when pulling the inner sleeve Z05, record the maximum tension, which is the tension when the first buckle Z06 comes out of the first slot Z02;

[0052] When the inner sleeve Z05 is pulled, the pulling force ranges from 3 to 10 N; the stroke of pulling the inner sleeve Z05 is 1 / 5 to 1 / 3 of the length of the inner sleeve Z05; further, the stroke of pulling the inner sleeve Z05 is 3 to 5 mm;

[0053] The pulling force and pulling position (i.e. pulling force stroke) of the inner sleeve Z05 are controlled to prevent the inner sleeve Z05 from being pulled to a locked state when it is discarded, and thus being completely discarded and unable to be restored;

[0054] S4, pushing the outer sliding sleeve Z09, and in the process of the outer sliding sleeve Z09 driving the inner sliding sleeve Z05 to move toward the root of the needle handle Z01, firstly make the first buckle Z06 engage in the first clamping groove Z02 to complete the reset of the inner sliding sleeve Z05, and then make the second buckle Z10 engage in the third clamping groove Z07 to complete the reset of the outer sliding sleeve Z09;

[0055] That is, the inner sliding sleeve Z05 and the outer sliding sleeve Z09 are restored to their initial positions in sequence, so that the safety needle Z00 is restored to its original position. Figure 1 Factory status shown;

[0056] S5, push the needle sheath Z11 so that the needle sheath Z11 is sleeved on the head of the needle handle Z01, and the needle sheath Z11 is reset;

[0057] S6. Perform finished product visual inspection on the safety needle Z00 after it is reset in S5 to check whether the inner sliding sleeve Z05, the outer sliding sleeve Z09 and the needle sheath Z11 of the safety needle Z00 have been reset;

[0058] S7. If the detection result is that the safety needle Z00 has been reset, the reset safety needle Z00 is transferred to the next process; if the detection result is that the safety needle Z00 has not been reset, the safety needle Z00 that has not been reset is removed and reset again;

[0059] During the visual inspection of finished products, it is possible to check whether the inner sliding sleeve Z05, outer sliding sleeve Z09 and needle sheath Z11 of the safety needle Z00 have been reset;

[0060] S8, performing air tightness test on the safety needle Z00 that has been reset as detected by S7, to detect whether the safety needle Z00 is leaking;

[0061] S9. If the test result is that there is no air leakage, the safety needle Z00 without air leakage is transferred to the next process; if the test result is that there is air leakage, the safety needle Z00 with air leakage is removed and reprocessed;

[0062] During the air tightness test, the safety needle Z00 can be tested for air leakage, especially at the pushed and pulled parts.

[0063] The safety needle sleeve tension detection method of the present invention controls the tension size and pulling position of the outer sleeve Z09 and the inner sleeve Z05 to prevent the outer sleeve Z09 and the inner sleeve Z05 from being pulled to a locked state when discarded, and being completely scrapped and unable to be restored; the safety needle sleeve tension detection method of the present invention has high detection efficiency and accurate detection results, and can comprehensively detect the tension of the safety needle Z00 sleeve.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for detecting the tension of a safety needle sleeve, comprising a tension detection device (L00), wherein the safety needle (Z00) comprises a needle handle (Z01) and a needle (Z14) inserted in the needle handle (Z01), wherein the needle handle (Z01) connects the needle (Z14) with one end of a catheter (Z12), wherein a wing (Z04) is provided on the needle handle (Z01), and the other end of the catheter (Z12) is connected to a needle holder (Z13); the safety needle (Z00) further comprises an inner sleeve (Z05), an outer sleeve (Z09) and a needle sheath (Z11) sleeved on the needle handle (Z01); a locking mechanism is provided on the needle handle (Z01), the inner sleeve (Z05) and the outer sleeve (Z09), wherein the locking mechanism is provided on the needle handle (Z01), and the locking mechanism is provided on the needle handle (Z01), and the locking mechanism is provided on the inner sleeve (Z05) and the outer sleeve (Z09). The locking mechanism comprises a first card groove (Z02) provided on the rear outer surface of the needle handle (Z01), a second card groove (Z03) provided on the front outer surface of the needle handle (Z01), a first buckle (Z06) provided on the rear of the inner sleeve (Z05), a third card groove (Z07) provided on the rear outer surface of the inner sleeve (Z05), a fourth card groove (Z08) provided on the front outer surface of the inner sleeve (Z05), and a second buckle (Z10) provided on the rear of the outer sleeve (Z09); when the safety needle (Z00) is in the factory state, the first card groove (Z02) and the first buckle (Z06), the third card groove (Z07) and the second buckle (Z10) are respectively engaged with each other and are in a locked state, characterized in that The safety needle sliding sleeve tension detection method comprises the following steps: S1, fixing the needle handle (Z01), the wing (Z04), the catheter (Z12) and the needle holder (Z13) at the same time, pulling the outer sleeve (Z09) through the tension detection device (L00), so that the second buckle (Z10) is disengaged from the third slot (Z07), and the second buckle (Z10) is located between the third slot (Z07) and the fourth slot (Z08); when pulling the outer sleeve (Z09), the maximum tension is recorded; S2, pulling the needle shield (Z11) to separate the needle shield (Z11) from the head of the needle handle (Z01); S3, pulling the inner sleeve (Z05) by means of the tension detection device (L00) so that the first buckle (Z06) is disengaged from the first slot (Z02), and the first buckle (Z06) is located between the first slot (Z02) and the second slot (Z03); when pulling the inner sleeve (Z05), the maximum tension is recorded; S4, pushing the outer sliding sleeve (Z09), the outer sliding sleeve (Z09) drives the inner sliding sleeve (Z05) to move toward the root of the needle handle (Z01), so that the first buckle (Z06) is embedded in the first slot (Z02), and the second buckle (Z10) is embedded in the third slot (Z07), completing the reset of the inner sliding sleeve (Z05) and the outer sliding sleeve (Z09); S5. Push the needle shield (Z11) so that the needle shield (Z11) is sleeved on the head of the needle handle (Z01), thereby completing the resetting of the needle shield (Z11).

2. A method for detecting the tension of a safety needle sleeve according to claim 1, characterized in that: In S1 and S3, when the outer sliding sleeve (Z09) and the inner sliding sleeve (Z05) are pulled, the pulling force range is 3 to 10N.

3. A method for detecting the tension of a safety needle sleeve according to claim 1, characterized in that: In the above-mentioned S4, when the outer sleeve (Z09) drives the inner sleeve (Z05) to move toward the root of the needle handle (Z01), the first buckle (Z06) is first engaged in the first slot (Z02) to complete the resetting of the inner sleeve (Z05), and then the second buckle (Z10) is engaged in the third slot (Z07) to complete the resetting of the outer sleeve (Z09).

4. A method for detecting the tension of a safety needle sleeve according to claim 1, characterized in that: In the step S1, the stroke of pulling the outer sliding sleeve (Z09) is 1 / 5 to 1 / 3 of the length of the outer sliding sleeve (Z09).

5. A method for detecting the tension of a safety needle sleeve according to claim 4, characterized in that: In the step S1, the stroke of pulling the outer sliding sleeve (Z09) is 3 to 5 mm.

6. A method for detecting the tension of a safety needle sleeve according to claim 1, characterized in that: In the step S3, the stroke of pulling the inner sliding sleeve (Z05) is 1 / 5 to 1 / 3 of the length of the inner sliding sleeve (Z05).

7. A method for detecting the tension of a safety needle sleeve according to claim 6, characterized in that: In the step S3, the stroke of pulling the inner sliding sleeve (Z05) is 3 to 5 mm.

8. A method for detecting the tension of a safety needle sleeve according to any one of claims 1 to 7, characterized in that: The following steps are also included: S6. Perform finished product visual inspection on the safety needle (Z00) after being reset in S5 to check whether the inner sliding sleeve (Z05), the outer sliding sleeve (Z09) and the needle shield (Z11) of the safety needle (Z00) have been reset; S7. If the detection result is that the safety needle (Z00) has been reset, the reset safety needle (Z00) is transferred to the next process; If the detection result is that it has not been reset, the unreset safety needle (Z00) will be removed and reset again.

9. A method for detecting the tension of a safety needle sleeve according to claim 8, characterized in that: The following steps are also included: S8, performing an air tightness test on the safety needle (Z00) that has been reset according to the test result of S7, to check whether the safety needle (Z00) is leaking; S9. If the test result is no leakage, the safety needle (Z00) without leakage is transferred to the next process; If the test result is leakage, the leaking safety needle (Z00) will be removed and reprocessed.

10. A method for detecting the tension of a safety needle sleeve according to claim 1, characterized in that: The tension detection device (L00) comprises a tension meter (L01) and a chuck (L02), wherein the chuck (L02) is connected to the front end of the tension meter (L01), and the chuck (L02) is used to clamp the outer sliding sleeve (Z09) or the inner sliding sleeve (Z05).

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