CN215348972U - Puncture-proof blood taking needle - Google Patents
Puncture-proof blood taking needle Download PDFInfo
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- CN215348972U CN215348972U CN202121248035.9U CN202121248035U CN215348972U CN 215348972 U CN215348972 U CN 215348972U CN 202121248035 U CN202121248035 U CN 202121248035U CN 215348972 U CN215348972 U CN 215348972U
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Abstract
The utility model discloses a puncture-proof blood taking needle which comprises a vein blood taking needle, a blood transfusion hose and a puncture needle, wherein the blood transfusion hose is provided with a protection mechanism and a puncture-proof mechanism; the protection mechanism comprises a cylindrical outer barrel and an inner barrel, wherein a sliding groove is formed in the outer barrel along the length direction of the outer barrel, the inner barrel is connected to the inside of the outer barrel in a sliding mode, a sliding handle matched with the sliding groove is arranged on the inner barrel, one end of the blood transfusion hose penetrates into the end faces of the outer barrel and the inner barrel in sequence and penetrates out of the other end face of the inner barrel, and the end of the blood transfusion hose is connected with the vein blood taking needle; the puncture-proof mechanism comprises a cylindrical sleeve, the sleeve is sleeved on the outer side of the puncture needle, the length of the sleeve is larger than that of the puncture needle, a baffle is connected in the sleeve in a sliding mode, and a needle hole used for penetrating the puncture needle is formed in the baffle. The utility model has the advantages of compact structure, reasonable design, convenient use and safety.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to an anti-puncture blood taking needle.
Background
Blood taking needles commonly used in clinic, i.e., disposable venous blood taking needles, often have the following care risks: when blood sampling is finished, the sharp needle tip of the blood sampling needle head is exposed outside, and no needle-prick prevention protection device is arranged on the needle tip, so that the needle tip can easily prick nursing personnel; when the blood sampling test tube is separated, the needle inserted into the end of the test tube is easy to cause needle stick injury. Nursing staff are high-risk groups of needle stick injuries, more than 20 blood-borne infectious diseases can be transmitted by the needle stick injuries, and 80-90% of health care staff suffering from the blood-borne infectious diseases are caused by the needle stick injuries.
The occurrence of the needle stick injury event not only can cause the spread of blood diseases, but also can cause great psychological pressure to nursing personnel, and a safe blood taking needle for preventing the needle stick injury is urgently needed in clinic.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides the puncture-proof blood taking needle which has the advantages of compact structure, reasonable design, convenience in use and capability of effectively preventing puncture.
The technical scheme of the utility model is as follows:
a puncture-proof blood taking needle comprises a vein blood taking needle and a puncture needle which are connected through a blood transfusion hose, wherein a protection mechanism is arranged at the joint of the vein blood taking needle and the blood transfusion hose, and a puncture-proof mechanism is arranged at the joint of the puncture needle and the blood transfusion hose;
the protection mechanism comprises a cylindrical outer barrel and an inner barrel, wherein a sliding groove is formed in the outer barrel along the length direction of the outer barrel, the inner barrel is connected to the inside of the outer barrel in a sliding mode, a sliding handle matched with the sliding groove is arranged on the inner barrel, the venous blood taking needle sequentially penetrates through the outer barrel and the inner barrel from the end face of the outer barrel, and the blood transfusion hose is fixedly connected to the end face of the outer barrel;
prevent thorn mechanism, including cylindric sleeve, the pjncture needle is followed sleeve is inserted and fixed connection is in telescopic bottom, and telescopic length is greater than the length of pjncture needle, sliding connection has the baffle in the sleeve, and this baffle is just being equipped with the pinhole to pjncture needle department.
The working principle of the technical scheme is as follows:
the outer cylinder is a concave cylinder, the inner cylinder is a cylinder matched with the groove of the outer cylinder, the inner cylinder can be completely embedded into the groove of the outer cylinder, and the inner cylinder can freely slide in the outer cylinder; the sliding groove is positioned in the middle of the outer cylinder, the length of the sliding groove is smaller than that of the inner cylinder, elastic clamping pieces are further arranged at two ends of the sliding groove in order to prevent the inner cylinder from sliding carelessly, when the inner cylinder is positioned at two ends of the sliding groove, the sliding handles are clamped by the elastic clamping pieces, the inner cylinder is prevented from sliding freely to influence use, and meanwhile, when the inner cylinder needs to slide, only the sliding handles need to be pushed forcibly, the blood transfusion hose is fixedly connected with the bottom surface of the groove of the outer cylinder, and the blood transfusion hose is connected with the inner cylinder in a sliding manner; the sleeve is a concave cylinder, the bottom of the groove is fixedly connected with the puncture needle, the puncture needle is completely positioned in the groove of the sleeve, a baffle matched with the groove is arranged in the sleeve, the baffle can slide in the groove, and the end surface of the baffle is fixedly connected with the bottom surface of the groove of the sleeve through an elastic piece.
When blood is collected, the sliding handle is arranged at one end, far away from the venous blood collection needle, of the sliding groove, the inner barrel is completely embedded into the outer barrel, the venous blood collection needle is exposed, meanwhile, the test tube is inserted into the groove of the sleeve, the test tube pushes the baffle plate, the baffle plate is pushed towards the bottom surface of the groove of the sleeve, the puncture needle penetrates through the needle hole in the baffle plate and penetrates into the test tube, when the baffle plate is pushed to the bottom of the groove, the elastic part is compressed, and the baffle plate is clamped at the bottom of the groove to prevent the baffle plate from rebounding; after the blood sampling finishes, push away the other end to the slip handle from the one end of keeping away from the blood sampling needle to drive the inner tube and slide, let the inner tube cover the blood sampling needle completely, prevent that the blood sampling needle from stabbing medical personnel, take off the test tube, let the baffle no longer block in the middle part of recess, baffle is automatic kick-backs under the effect of elastic component resilience force, and blocks the pjncture needle, avoids the pjncture needle to stab medical personnel.
In a further technical scheme, an elastic piece is arranged between the bottom end of the sleeve and the end face of the baffle, and a protruding block used for preventing the baffle from popping out of the sleeve is arranged at one end, facing the puncture needle, of the sleeve.
The elastic piece is the flexure strip, and the elastic piece compression when the baffle slides telescopic bottom provides power for the automatic resilience of baffle, the lug can block the baffle when the baffle rebounds, lets the baffle can not popped out the sleeve.
In a further technical scheme, the baffle is a round cover, the radius of the baffle is matched with that of the sleeve, a groove is formed in the baffle along the radius direction, the depth of the groove is smaller than the radius of the baffle, a spring is fixedly connected in the groove, one end of the spring is fixed on the bottom surface of the groove, and a fixture block is fixedly connected to the other end of the spring and is connected in the groove in a sliding manner; and the middle part of the sleeve is provided with a through hole matched with the clamping block.
When the baffle is at the telescopic recess open end, the fixture block is blocked by telescopic recess inner wall, makes the fixture block in the inside of baffle, and does not influence the slip of baffle in the sleeve, and the spring is in compression state this moment, and when the baffle slided to through-hole department, a part of fixture block was popped out the recess of baffle and is blocked in the through-hole by the spring, when pressing the fixture block down, because telescopic wall thickness is thin, and the end of fixture block is hemispherical, and the baffle is kick-backed under the thrust of elastic component simultaneously to be blocked by the lug.
The utility model has the beneficial effects that:
1. the blood collection device has the advantages of compact structure, reasonable design, convenience and safety in use, can better prevent puncture wound during clinical blood collection, can reduce the incidence rate of puncture wound in the existing clinical blood collection, and reduces blood-borne exposure and infectious diseases caused by puncture wound;
2. the baffle automatically rebounds and blocks the puncture needle in the sleeve, so that the puncture wound can be better prevented;
3. the product is convenient to hold and operate, can be widely applied to various hospitals, and has low cost, convenient manufacture and forming and great social demand;
4. the operation is simple, the needle head can be covered by only pressing down the clamping block and pushing the sliding handle, the medical care personnel are protected, and the occurrence of acupuncture is avoided.
Drawings
FIG. 1 is a schematic view showing an overall structure of a lancet for preventing puncture according to an embodiment of the present invention;
FIG. 2 is a partial structural view of a lancet for puncture prevention according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a baffle according to an embodiment of the utility model.
Description of reference numerals:
1-venous blood taking needle, 2-blood transfusion hose, 3-puncture needle, 4-outer cylinder, 5-inner cylinder, 6-sleeve, 7-baffle, 8-elastic element, 401-sliding groove, 501-sliding handle, 601-through hole, 701-pinhole, 702-fixture block and 703-spring.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example (b):
as shown in fig. 1, the puncture-proof blood taking needle comprises a vein blood taking needle 1, a blood transfusion hose 2 and a puncture needle 3, wherein the vein blood taking needle 1 is connected with the puncture needle 3 through the blood transfusion hose 2, a protection mechanism is arranged at the joint of the vein blood taking needle 1 and the blood transfusion hose 2, and a puncture-proof mechanism is arranged at the joint of the puncture needle 3 and the blood transfusion hose 2;
the protection mechanism comprises a cylindrical outer barrel 4 and an inner barrel 5, wherein a sliding groove 401 is formed in the outer barrel 4 along the length direction of the outer barrel, the inner barrel 5 is connected to the inside of the outer barrel 4 in a sliding mode, a sliding handle 501 matched with the sliding groove 401 is arranged on the inner barrel 5, one end of the sliding handle 501 is fixedly connected to the inner barrel 5, the other end of the sliding handle 501 penetrates out of the sliding groove 401, the venous blood collection needle 1 sequentially penetrates through the outer barrel 4 and the inner barrel 5 from the end face of the outer barrel 4, and the blood transfusion hose 2 is fixedly connected to the end face of the outer barrel 4;
prevent thorn mechanism, including cylindric sleeve 6, pjncture needle 3 follows sleeve 6 is inserted to the bottom of sleeve 6 and fixed connection is in the bottom of sleeve 6, and the length of sleeve 6 is greater than the length of pjncture needle 3, sliding connection has baffle 7 in the sleeve 6, and this baffle 7 is just being equipped with pinhole 701 to pjncture needle 3 department.
The working principle of the technical scheme is as follows:
the outer barrel 4 is a concave cylinder, the inner barrel 5 is a cylinder matched with the groove of the outer barrel 4, the inner barrel 5 can be completely embedded into the groove of the outer barrel 4, and the inner barrel 5 can freely slide in the outer barrel 4; the sliding groove 401 is positioned in the middle of the outer cylinder 4, the length of the sliding groove 401 is smaller than that of the inner cylinder 5, in order to prevent the inner cylinder 5 from sliding carelessly, elastic clamping pieces are further arranged at two ends of the sliding groove 401, when the inner cylinder 5 is positioned at two ends of the sliding groove 401, the sliding handle 501 is clamped by the elastic clamping pieces, the inner cylinder 5 is prevented from sliding freely to influence use, and meanwhile, when the inner cylinder 5 needs to slide, only the sliding handle 501 needs to be pushed by force, the blood transfusion hose 2 is fixedly connected with the bottom surface of the groove of the outer cylinder 4, and the blood transfusion hose 2 is connected with the inner cylinder 5 in a sliding manner; the sleeve 6 is a concave cylinder, the bottom of the groove is fixedly connected with the puncture needle 3, the puncture needle 3 is completely positioned in the groove of the sleeve 6, a baffle 7 matched with the groove is arranged in the sleeve 6, the baffle 7 can slide in the groove, and the end surface of the baffle 7 is fixedly connected with the bottom surface of the groove of the sleeve 6 through an elastic part 8.
When blood is collected, the sliding handle 501 is arranged at one end of the sliding groove far away from the venous blood collection needle 1, the inner barrel 5 is completely embedded in the outer barrel 4 at the moment, the venous blood collection needle 1 is exposed, meanwhile, the test tube is inserted into the groove of the sleeve 6, the test tube pushes the baffle 7 to push the baffle 7 to the bottom surface of the groove of the sleeve 6, the puncture needle 3 penetrates through a needle hole 701 in the baffle 7 and penetrates into the test tube, when the baffle 7 is pushed to the bottom of the groove, the elastic part 8 is compressed, and the baffle 7 is clamped at the bottom of the groove to prevent the baffle 7 from rebounding; after the blood sampling finishes, push away the other end from the one end of keeping away from blood taking needle 1 to slip handle 501 to drive inner tube 5 and slide, let inner tube 5 cover blood taking needle 1 completely, prevent that blood taking needle 1 from stabbing medical personnel, take off the test tube, let baffle 7 no longer block in the middle part of recess, baffle 7 is automatic kick-backs under the effect of elastic component 8 resilience power, and block pjncture needle 3, avoids pjncture needle 3 to stab medical personnel.
In another embodiment, an elastic member 8 is arranged between the bottom end of the sleeve 6 and the end surface of the baffle 7, and a projection for preventing the baffle 7 from being ejected out of the sleeve 6 is arranged at the end of the sleeve 6 facing the puncture needle 3.
In another embodiment, the baffle 7 is a round cap, the radius of the baffle 7 is matched with the radius of the sleeve 6, the baffle 7 is provided with a groove along the radius direction, the depth of the groove is smaller than the radius of the baffle 7, a spring 703 is fixedly connected in the groove, one end of the spring 703 is fixed on the bottom surface of the groove, the other end of the spring 703 is fixedly connected with a fixture block 702, and the fixture block 702 is slidably connected in the groove; the middle part of the sleeve 6 is provided with a through hole 601 matched with the clamping block 702.
When the baffle 7 is arranged at the opening end of the groove of the sleeve 6, the fixture block 702 is blocked by the inner wall of the groove of the sleeve 6, so that the fixture block 702 is arranged inside the baffle 7 and does not influence the sliding of the baffle 7 in the sleeve 6, at the moment, the spring 703 is in a compressed state, when the baffle 7 slides to the through hole 601, a part of the fixture block 702 is popped out of the groove of the baffle 7 by the spring 703 and is clamped in the through hole 601, when the fixture block 702 is pressed downwards, because the wall thickness of the sleeve 6 is thin and the end of the fixture block 702 is hemispherical, and meanwhile, under the thrust of the elastic element 8, the baffle 7 is rebounded and is blocked by the bump.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (4)
1. A puncture-proof blood taking needle comprises a vein blood taking needle and a puncture needle which are connected through a blood transfusion hose, and is characterized in that a protection mechanism is arranged at the joint of the vein blood taking needle and the blood transfusion hose, and a puncture-proof mechanism is arranged at the joint of the puncture needle and the blood transfusion hose;
the protection mechanism comprises a cylindrical outer barrel and an inner barrel, wherein a sliding groove is formed in the outer barrel along the length direction of the outer barrel, the inner barrel is connected to the inside of the outer barrel in a sliding mode, a sliding handle matched with the sliding groove is arranged on the inner barrel, the venous blood taking needle sequentially penetrates through the outer barrel and the inner barrel from the end face of the outer barrel, and the blood transfusion hose is fixedly connected to the end face of the outer barrel;
prevent thorn mechanism, including cylindric sleeve, the pjncture needle is followed sleeve is inserted and fixed connection is in telescopic bottom, and telescopic length is greater than the length of pjncture needle, sliding connection has the baffle in the sleeve, and this baffle is just being equipped with the pinhole to pjncture needle department.
2. A puncture-proof blood taking needle as claimed in claim 1, wherein an elastic member is provided between the bottom end of the sleeve and the end surface of the barrier, and a projection for preventing the barrier from ejecting out of the sleeve is provided at the end of the sleeve facing the puncture needle.
3. The puncture-proof blood taking needle as claimed in claim 1, wherein the baffle is a round cap, the radius of the baffle matches with the radius of the sleeve, the baffle is provided with a groove along the radius direction, the depth of the groove is smaller than the radius of the baffle, a spring is fixedly connected in the groove, one end of the spring is fixed on the bottom surface of the groove, and the other end of the spring is fixedly connected with a clamping block which is connected in the groove in a sliding manner.
4. The lancet of claim 3, wherein the sleeve has a through hole at the middle thereof for engaging with the latch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121248035.9U CN215348972U (en) | 2021-06-04 | 2021-06-04 | Puncture-proof blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121248035.9U CN215348972U (en) | 2021-06-04 | 2021-06-04 | Puncture-proof blood taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215348972U true CN215348972U (en) | 2021-12-31 |
Family
ID=79633296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121248035.9U Active CN215348972U (en) | 2021-06-04 | 2021-06-04 | Puncture-proof blood taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215348972U (en) |
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2021
- 2021-06-04 CN CN202121248035.9U patent/CN215348972U/en active Active
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