CN102406505B - Split-type hemostix with safety protection device - Google Patents
Split-type hemostix with safety protection device Download PDFInfo
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- CN102406505B CN102406505B CN201110260131.XA CN201110260131A CN102406505B CN 102406505 B CN102406505 B CN 102406505B CN 201110260131 A CN201110260131 A CN 201110260131A CN 102406505 B CN102406505 B CN 102406505B
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- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims 2
- 238000002360 preparation method Methods 0.000 claims 1
- 239000008280 blood Substances 0.000 abstract description 29
- 210000004369 blood Anatomy 0.000 abstract description 29
- 230000006378 damage Effects 0.000 abstract description 2
- 238000007705 chemical test Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 15
- 238000010241 blood sampling Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The invention provides a split-type hemostix with a protection device. In the invention, when a safety sleeve is located at a second locating position, an external force transmission mechanism is arranged on the wall of the safety sleeve corresponding to a connector and is matched with the connector; and external force acts on the connector through the safety sleeve by adopting the external force transmission mechanism so as to detach the connector from the upper end of a cylinder. After the split-type hemostix with the protection device is used for drawing blood from a patient, the safety sleeve is located at the second locating position, and a needle head is hidden in the sleeve, thus preventing damage on medical care personnel; and at this time medical care personnel can enable the external force to act on the connector through the safety sleeve by adopting the external force transmission mechanism so as to conveniently detach the connector from the cylinder so that the cylinder containing blood can be directly utilized as a chemical test tube.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a split type hemostix with a protective device.
Background
At present, when a hospital takes a blood sample for testing, a disposable syringe is generally used for taking blood, and then the collected blood sample is transferred into a test tube for testing to test the blood sample. During the transfer of the blood sample from the syringe to the test tube, contamination of the blood sample is likely to occur once carelessly handled.
In order to solve the above technical problems, chinese patent document CN201609369U discloses a blood sampling device, which comprises a needle cylinder, a joint, a fixing sleeve, a needle, a piston and a push rod, wherein the cross section of the needle cylinder is square, four corners of the needle cylinder are arc-shaped, and the push rod is detachably connected with the piston. The inner wall of the lower end of the joint is provided with internal threads, the outer wall of the upper end of the needle cylinder is provided with external threads, and the joint is in threaded connection with the needle cylinder; a fixed block is arranged at the top end of the push rod, the cross section of the fixed block is quadrilateral, one pair of edges is a straight line, and the other pair of edges is an arc line; the piston is internally provided with a cylindrical accommodating cavity for the fixed block to rotate, the piston is provided with an outlet for accommodating the fixed block to go in and out, and the width of the outlet is slightly wider than that of the fixed block. After using the hemostix to extract the blood sample, pulling the push rod, making the piston reach the bottom of cylinder, because rotating the push rod, making the straight line opposite side of fixed block correspond with the export, just can withdraw from the fixed block from cylindrical cavity, then take the push rod out from the round hole again, unload the joint that has the syringe needle of cylinder upper end, the hemostix just becomes the test tube of a splendid attire blood sample like this, can directly be used for the chemical examination with the test tube and use.
After the blood sampler in the technology is used for extracting blood samples, medical personnel are easily pricked by the exposed needle head and easily cause infection in the process of removing the joint with the needle head at the upper end of the needle cylinder due to the exposed needle head.
In order to solve the technical problem that medical staff are pricked by an exposed needle in the process of using a disposable syringe, the U.S. patent document US6206853B1 discloses an automatic retraction injection needle, which comprises a barrel, one end of which is provided with an injection needle supporting device, a movable piston is arranged in the barrel, the barrel is arranged in a sleeve and can slide, and a spring is arranged between the sleeve and the barrel; at least one elastic flange is matched with part of the barrel to form a first positioning position of the barrel relative to the sleeve, and when the spring is in the first positioning position, the spring is in a compressed state and the needle is exposed out of the sleeve; the positioning means positions the barrel in a second position relative to the sleeve in which the spring at least partially restores its natural state with the needle concealed within said sleeve. When the piston moves to the bottom end of the barrel, the elastic flange is triggered, the elastic flange is released from the barrel part, so that the automatic retraction injection needle changes from a state of being at a first positioning position to a state of being at a second positioning position, and the spring pushes the barrel to move until the barrel is positioned at the second positioning position. The positioning device comprises an elastic check ring arranged around the cylinder body, the elastic check ring is positioned between the sleeve and the cylinder body and is in a compressed state when being positioned at a first positioning position, and the elastic check ring is in a natural state when being positioned at a second positioning position; the end of the sleeve is provided with a sleeve portion and in the second set position the circlip is at least partially captured within the sleeve portion between the end of the sleeve and at least one shoulder on the sleeve portion to capture the cartridge in the second set position.
In the automatic retraction injection needle in the technology, when the needle head is in the first positioning position, the needle head is exposed outside the sleeve, and the injection can be carried out; after the injection is finished, when the automatic retraction injection needle is converted from the first positioning position to the second positioning position, the needle head is hidden in the sleeve, so that the situation that medical personnel are pricked by the exposed needle head is avoided. However, when the above-mentioned technique is applied to a blood sampling and testing dual-purpose blood sampling device with a joint, not only the needle is hidden in the sleeve but also the joint is hidden in the sleeve when the needle is in the second positioning position, so that there is no way to detach the joint from the syringe, and the dual-purpose blood sampling and testing of the blood sampling device can not be achieved.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to provide a split type blood collector with a protective device, which can be conveniently detached from a needle cylinder, wherein when a needle guard in the prior art is used in a blood collector for both blood collection and test, the needle head is hidden in the sleeve, and the joint is also hidden in the sleeve, so that the joint cannot be detached from the needle cylinder, and the purpose of both blood collection and test of the blood collector cannot be realized.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a split type hemostix with a protective device comprises a cylinder body and a push rod, wherein the push rod is arranged in the cylinder body and is suitable for sliding along the inner wall of the cylinder body; the needle head consists of an injection needle and a joint which is used for fixing the injection needle and is movably connected with the barrel body; the safety sleeve is sleeved outside the barrel body; the safety sleeve is provided with a first positioning position and a second positioning position relative to the barrel, and when the safety sleeve is positioned at the first positioning position, the injection needle of the needle head is exposed outside the safety sleeve; when the safety sleeve is in the second positioning position, the needle head is hidden in the safety sleeve; when the safety sleeve is located at the second positioning position, an external force transmission mechanism is arranged on the wall, corresponding to the joint, of the safety sleeve and matched with the joint, the external force transmission mechanism applies external force to the joint through the safety sleeve, and the joint is detached from the upper end of the barrel.
The external force transmission mechanism comprises one or more salient points and one or more clamping grooves matched with the salient points; when the safety sleeve is located the second locating position, the bump is suitable for the card to be gone into realize acting external force through the safety sleeve on the joint in the screens inslot.
The salient point is arranged on the joint, and the clamping groove is arranged on the safety sleeve.
A guide groove is arranged above the clamping groove, and the salient point is suitable for sliding along the guide groove; the guide groove is separated from the clamping groove by a clamping strip.
The bump lower extreme extends and is provided with domatic, domatic being suitable for the bump process the screens strip slides in the screens groove.
The two salient points are symmetrically arranged by taking the push rod as a center; correspondingly, the clamping grooves are symmetrically arranged in two by taking the push rod as a center.
The external force transmission mechanism comprises a soft rubber part arranged in the middle of the safety sleeve, when the safety sleeve is located at the second positioning position, the soft rubber part is located at the joint and is used for holding the soft rubber part, so that the holding power can be transmitted to the joint.
A first locking mechanism is also provided for positioning the safety sleeve in a first position.
The first locking mechanism comprises a notch arranged on a flange at the lower end of the cylinder body and a hanging buckle arranged at the lower end of the safety sleeve; the hanging buckle is composed of a buckle belt and a buckle head, the buckle belt is suitable for being clamped into the notch, and the size of the buckle head is larger than that of the notch.
The buckle head is arranged in an inverted trapezoid shape.
A second locking mechanism is also provided for positioning the safety sleeve in a second positioning position.
The second locking mechanism includes a recess and one or more projections adapted to snap into the recess.
The groove is arranged at the joint; the protrusion is arranged on the inner wall of the sleeve.
The outer diameter of the joint is larger than that of the cylinder, and a transition section with the outer diameter gradually increasing from bottom to top is arranged near the top end of the cylinder.
The groove is arranged along the circumferential direction of the joint, and the bulges are uniformly distributed along the circumferential direction of the safety sleeve.
The recess is the ring channel, the arch is four.
The safety sleeve is axially arranged between the safety sleeve and the barrel body; a space suitable for the axial arrangement of the spring is arranged between the safety sleeve and the cylinder body; and a limiting component for limiting the spring upwards is formed between the safety sleeve and the barrel, and a flange at the lower end of the barrel limits the spring downwards.
The safety sleeve is composed of an upper sleeve and a lower sleeve, the inner diameter of the upper sleeve is smaller than that of the lower sleeve, a combination part is formed between the upper sleeve and the lower sleeve, and the combination part forms the limiting part.
The upper end of the push rod is provided with a crosshead which is convenient to break.
The top end of the push rod is provided with a piston seat for sealing the bottom end of the barrel, and the lower end of the piston seat is provided with a chuck with four clamping grooves in an extending manner; the crosshead is clamped in the chuck.
The lower end of the cylinder body is provided with a tail plug for limiting the piston seat.
Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:
(1) according to the split type hemostix with the protection device, when the safety sleeve is located at the second positioning position, the needle head is hidden in the safety sleeve; when the safety sleeve is located at the second positioning position, an external force transmission mechanism is arranged on the wall, corresponding to the joint, of the safety sleeve and matched with the joint, the external force transmission mechanism applies external force to the joint through the safety sleeve, and the joint is detached from the upper end of the barrel. After the split type hemostix with the protective device is used for collecting blood of a patient, the safety sleeve is in the second positioning position, and the needle head is hidden in the sleeve, so that medical personnel cannot be injured. Medical personnel pass through external force transmission mechanism this moment with external force through safety sleeve acts on the joint, can conveniently with the joint is followed the barrel is unloaded to the barrel that contains blood just can regard as the chemical examination test tube and directly use.
(2) The split type hemostix with the protection device is provided with a first locking mechanism for positioning the safety sleeve at a first positioning position and a second locking mechanism for positioning the safety sleeve at a second positioning position. When first locking mechanical system locked safety sleeve in first locating position, the syringe needle of hemostix is stably exposed outside the safety sleeve, has guaranteed the stability of taking a blood sample work and has gone on. When the safety sleeve is locked at the second positioning position by the second locking mechanism, the needle head is stably hidden in the safety sleeve, so that the needle head is ensured not to hurt medical personnel, and the joint can be conveniently detached from the barrel.
(3) According to the split hemostix with the protective device, the spring is axially arranged between the safety sleeve and the cylinder body; a space suitable for the axial arrangement of the spring is arranged between the safety sleeve and the cylinder body; and a limiting component for limiting the spring upwards is formed between the safety sleeve and the barrel, and a flange at the lower end of the barrel limits the spring downwards. The spring is arranged, so that the safety sleeve automatically moves from the first positioning position to the second positioning position under the action of the elastic force of the spring, and the efficiency of actual blood sampling work is ensured.
(4) According to the split hemostix with the protective device, the crosshead which is convenient to break is arranged at the upper end of the push rod. The arrangement of the crosshead ensures that the push rod is easily broken after the blood sampling is finished, and the cylinder body can be conveniently converted into a test dish for use.
(5) According to the split type hemostix with the protection device, the piston seat for sealing the bottom end of the cylinder body is installed at the top end of the push rod, and the tail plug for limiting the piston seat is arranged at the lower end of the cylinder body. This arrangement ensures the seal against the blood sample when the cartridge is used as a cuvette and the stability of the cuvette during the assay operation.
Drawings
In order that the invention may be more clearly understood, specific embodiments thereof are described in further detail below with reference to the accompanying drawings. Wherein,
FIG. 1 is a schematic exploded perspective view of a split blood collection set with a protective device according to the present invention;
FIG. 2 is a partial cross-sectional view of the split cartridge with guard of the present invention with the safety sleeve in a first position;
FIG. 3 is a partial cross-sectional view of the shielded split-body hemostix of the present invention with the safety sleeve in the second orientation with the safety sleeve in cross-section through the bump;
FIG. 4 is an enlarged view of a portion of FIG. 3;
FIG. 5 is a partial cross-sectional view of the split cartridge with guard of the present invention with a groove on the adapter when the safety sleeve is in a second position;
fig. 6 is a partially enlarged view of fig. 5.
The reference numbers in the figures denote: 1-barrel, 101-flange, 102-notch, 103-tail plug, 104-transition section, 2-push rod, 201-crosshead, 202-handle, 3-piston seat, 301-clamping hole, 302-clamping head, 4-spring, 5-joint, 501-groove, 502-bump, 503-slope, 6-needle, 601-injection needle, 7-safety sleeve, 701-upper sleeve, 702-lower sleeve, 703-joint, 705-bulge, 706-hanging buckle, 7061-buckle band, 7062-buckle head, 707-guide groove, 708-clamping groove and 709-clamping strip.
Detailed Description
As shown in fig. 1, the split type blood collector with the protective device of the present invention comprises a cylinder 1 and a push rod 2, wherein the push rod 2 is disposed in the cylinder 1 and is adapted to slide along the inner wall of the cylinder 1; the needle head 6 consists of an injection needle 601 and a joint 5 which is used for fixing the injection needle 601 and is movably connected with the barrel 1; and the safety sleeve 7 is sleeved outside the barrel 1.
As shown in fig. 2, 3 and 5, the push rod 2 is provided with a cross head 201 at the upper end for easy breaking and a handle 202 at the lower end. A piston seat 3 for sealing the bottom end of the cylinder body 1 is mounted at the top end of the push rod 2, and a clamping head 302 with four clamping position holes 301 is arranged at the lower end of the piston seat 3 in an extending manner; the crosshead 201 is clamped in the chuck 302. The piston seat 3 is located inside the barrel 1 and is suitable for sliding along the inner wall of the barrel 1, the lower end of the barrel 1 is provided with a tail plug 103 to limit the piston seat 3, and the piston seat 3 is prevented from sliding out of the barrel 1 in the using process.
The safety sleeve 7 is arranged at a first positioning position relative to the barrel 1, as shown in fig. 2, when the safety sleeve 7 is at the first positioning position, the injection needle 601 of the needle 6 is exposed out of the safety sleeve 7; the split type hemostix with the protective device is also provided with a first locking mechanism for positioning the safety sleeve 7 at a first positioning position. As shown in fig. 1, a notch 102 is formed in a lower end flange 101 of the cylinder 1, a hanging buckle 706 is arranged on the lower end edge of the safety sleeve 7, the hanging buckle 706 comprises a buckle belt 7061 and a buckle head 7062, the size of the buckle head 7062 is larger than that of the notch 102, the shape of the buckle belt 7061 is matched with that of the notch 102, and the buckle head 7062 is in an inverted trapezoid shape.
The catch 706 and the notch 102 together form a first locking mechanism. As shown in fig. 2, in the process of pulling the safety sleeve 7 to the lower end of the barrel 1, the needle 6 is gradually exposed out of the safety sleeve 7, the buckle 7061 is snapped into the notch 102, and the buckle 7062 is snapped by the notch 102, so that the safety sleeve 7 is locked in position relative to the barrel 1. The safety sleeve 7 is now in the first position and the needle 6 is exposed outside the safety sleeve 7, at which time the device can be used for injecting or collecting blood from a person.
The safety sleeve 7 is also provided with a second positioning position relative to the barrel 1, and when the safety sleeve 7 is positioned at the second positioning position, the needle 6 is hidden in the safety sleeve 7; the split type hemostix with the protective device is also provided with a second locking mechanism for positioning the safety sleeve 7 at a second positioning position. One or more protruding points 502 are arranged on the joint 5, and one or more locking grooves 708 matched with the protruding points 502 are arranged on the safety sleeve 7, as shown in fig. 3 and 4, in this embodiment, two protruding points 502 are symmetrically arranged with the push rod 2 as a center; accordingly, the two detent grooves 708 are symmetrically arranged around the push rod 2. A guide groove 707 is arranged above the clamping groove 708, and the convex point 502 is suitable for sliding along the guide groove 707; the guide groove 707 and the locking groove 708 are separated by a locking bar 709. During the movement of the safety sleeve 7 from the first position to the second position, the protrusion 705 engages in the detent groove 708 via the detent strip 709.
The protruding point 502, the position-locking strip 709 and the position-locking groove 708 together form a second locking mechanism. As shown in fig. 3 and 4, when the safety sleeve 7 is pushed to move from the first positioning position to the direction of the upper end of the barrel 1, the position of the safety sleeve 7 relative to the barrel 1 is fixed when the protrusions 502 are inserted into the clamping grooves 708 below the guide grooves, and the safety sleeve 7 is located at the second positioning position, and the needle 6 is hidden in the safety sleeve 7.
As shown in fig. 4, a slope 503 is extended from the lower end of the protruding point 502, and the slope 503 is suitable for the protruding point 502 to slide into the locking groove 708 through the locking bar 709. As shown in fig. 4, the protruding point 502 is located above the position of the locking strip 709, and when the safety sleeve 7 is pushed to move continuously towards the upper end of the barrel 1, the height of the position where the protruding point 502 contacts the locking strip 709 is increased relative to the surface of the joint 5, so that the locking strip 709 is elastically deformed. When the protruding point 502 moves into the locking groove 708, the locking strip 709 is restored and the protruding point 502 is prevented from sliding out from the locking strip 709, so that the position of the safety sleeve 7 is locked.
Meanwhile, the protruding point 502 and the locking groove 708 together form an external force transmission mechanism. When the safety sleeve 7 is located at the second positioning position, the protruding points 502 are snapped into the snapping grooves 708, and then screwing the safety sleeve 7 can realize that an external force is applied to the joint 5 through the safety sleeve 7, so as to detach the joint 5 from the upper end of the barrel 1.
When the split type hemostix with the protective device is used for blood sampling and testing of a human body, the hanging buckle 706 is firstly buckled into the notch 102, as shown in fig. 2, the safety sleeve 7 is arranged at a first positioning position, the needle 6 is exposed out of the safety sleeve 7, and then the blood can be sampled on the human body like a common hemostix. After blood collection is finished, as shown in the figure, the push rod 2 is far away from the barrel body 1, the piston seat 3 supports against the tail plug 103 at the lower end of the barrel body 1, at this time, the hanging buckle 706 is broken away from the notch 102, the safety sleeve 7 is pushed to move from the first positioning position to the second positioning position, when the convex point 502 is embedded into the clamping groove 708 below the guide groove, the position of the safety sleeve 7 relative to the barrel body 1 is fixed, the needle 6 is hidden in the safety sleeve 7, and the needle 6 is hidden in the sleeve, so that injury to medical staff is avoided. Medical personnel will push rod 2 is first followed crosshead 201 below rupture, then through bump 502 with the common external force transmission mechanism who constitutes of screens groove 708, can conveniently with connect 5 follow the barrel 1 is unloaded to the barrel 1 that contains blood just can regard as the direct use of chemical examination test tube.
In other embodiments, the second locking mechanism may be comprised of a recess 501 and one or more protrusions 705 adapted to snap into the recess 501. As shown in fig. 5 and 6, the groove 501 is provided at the joint 5 in this embodiment; four elastic bulges 705 are arranged on the inner wall of the sleeve, the bulges 705 are uniformly distributed along the circumferential direction, of course, the bulges 705 can also be arranged into one or more than one and distributed on the inner wall of the sleeve in other ways, and the purpose of arranging the bulges 705 is to insert the bulges 705 into the grooves 501 in a clamping manner, so that the position locking of the sleeve is realized.
As shown in fig. 5, the safety sleeve 7 moves from the first positioning position to the upper end of the barrel 1, and when the protrusion 705 is inserted into the groove 501, the position of the safety sleeve 7 relative to the barrel 1 is fixed again, and at this time, the safety sleeve 7 is located at the second positioning position, and the needle 6 is hidden in the safety sleeve 7.
As can be seen from fig. 6, the outer diameter of the joint 5 is larger than that of the cylinder 1, the transition section 104 with gradually increasing outer diameter is arranged at the top of the cylinder 1, and the protrusion 705 passes through the transition section 104 and then is inserted into the groove 501 in the process of moving the safety sleeve 7 from the first locating position to the second locating position. As shown in fig. 6, when the protrusion 705 is located below the transition section 104, the protrusion 705 is not deformed because the outer diameter of the cylinder 1 is smaller than the distance between two opposite protrusions 705. When the safety sleeve 7 continues to move towards the upper end of the cylinder 1, the outer diameter of the top of the cylinder 1 at the transition section 104 gradually increases, and at this time, the protrusion 705 elastically deforms, and as shown in fig. 6, when the protrusion 705 moves to the groove 501, the protrusion 705 restores to the original shape and is inserted into the groove 501.
In other embodiments, the external force transmission mechanism may be a soft rubber portion in the middle of the safety sleeve 7, and when the safety sleeve 7 is located at the second positioning position, the soft rubber portion is located at the joint 5, and holding the soft rubber portion may transmit the grip force to the joint 5.
In a preferred embodiment, the split-type blood collector with a protective device of the present invention further comprises a spring 4, as shown in fig. 2, 3 and 5, wherein the spring 4 is axially installed between the safety sleeve 7 and the cylinder 1; a space suitable for the axial arrangement of the spring 4 is provided between the safety sleeve 7 and the cylinder 1; a limiting component for limiting the spring 4 upwards is formed between the safety sleeve 7 and the cylinder body 1, and a flange 101 at the lower end of the cylinder body 1 limits the spring 4 downwards. In this embodiment, the safety sleeve 7 is composed of an upper sleeve 701 and a lower sleeve 702, an inner diameter of the upper sleeve 701 is smaller than an inner diameter of the lower sleeve 702, a joint 703 is formed between the upper sleeve 701 and the lower sleeve 702, and the joint 703 constitutes the limiting component. After blood collection is finished, the hanging buckle 706 is separated from the notch 102, and the safety sleeve 7 can automatically move from the first positioning position to the second positioning position under the elastic force of the spring 4.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. It is not necessary or necessary to exhaustively enumerate all embodiments herein, and obvious variations or modifications can be introduced thereby while remaining within the scope of the invention as claimed.
Claims (17)
1. A split type hemostix with a protective device comprises
The push rod is arranged in the cylinder and is suitable for sliding along the inner wall of the cylinder;
the needle head consists of an injection needle and a joint which is used for fixing the injection needle and is movably connected with the barrel body in a threaded manner; the safety sleeve is sleeved outside the barrel body;
the safety sleeve is provided with a first positioning position and a second positioning position relative to the barrel, and when the safety sleeve is positioned at the first positioning position, the injection needle of the needle head is exposed outside the safety sleeve; when the safety sleeve is in the second positioning position, the needle head is hidden in the safety sleeve;
it is characterized in that the preparation method is characterized in that,
a second locking mechanism is arranged for positioning the safety sleeve at a second positioning position, the second locking mechanism comprises a groove and one or more protrusions suitable for being clamped into the groove, and the groove is arranged at the joint; the safety sleeve comprises a sleeve body, a joint, a safety sleeve, a protrusion and a transition section, wherein the protrusion is arranged on the inner wall of the sleeve, the outer diameter of the joint is larger than that of the sleeve body, the transition section with the outer diameter gradually increasing from bottom to top is arranged near the top end of the sleeve body, when the safety sleeve is located at a second positioning position, an external force transmission mechanism is arranged on the wall, corresponding to the joint, of the safety sleeve and matched with the joint, the external force transmission mechanism enables external force to act on the joint through screwing the safety sleeve, and the joint is detached from the upper end of.
2. The split type hemostix according to claim 1, wherein the external force transmission mechanism comprises one or more protrusions and one or more detent grooves engaged with the protrusions; when the safety sleeve is located the second locating position, the bump is suitable for the card to be gone into realize acting external force through the safety sleeve on the joint in the screens inslot.
3. The split hemostix according to claim 2, wherein the protrusions are provided on the joint and the locking grooves are provided on the safety sleeve.
4. The split type hemostix according to claim 3, wherein a guide groove is provided above the position-locking groove, and the protruding point is adapted to slide along the guide groove; the guide groove is separated from the clamping groove by a clamping strip.
5. The split type hemostix according to claim 4, wherein a slope is provided at the lower end of the protruding point, and the slope is suitable for the protruding point to slide into the blocking groove through the blocking strip.
6. The split type hemostix according to claim 2, 3, 4 or 5, wherein two bumps are symmetrically arranged around the push rod; correspondingly, the clamping grooves are symmetrically arranged in two by taking the push rod as a center.
7. The split type hemostix according to claim 1, wherein the external force transmission mechanism comprises a soft rubber part disposed in the middle of the safety sleeve, and when the safety sleeve is located at the second positioning position, the soft rubber part is located at the joint, and the grip force can be transmitted to the joint by holding the soft rubber part.
8. The split hemostix of claim 1, further comprising a first locking mechanism for positioning the safety sleeve in a first position.
9. The split hemostix according to claim 8, wherein the first locking mechanism comprises a notch provided on the flange of the lower end of the cylinder and a hanging buckle provided on the lower end of the safety sleeve; the hanging buckle is composed of a buckle belt and a buckle head, the buckle belt is suitable for being clamped into the notch, and the size of the buckle head is larger than that of the notch.
10. The split type hemostix according to claim 9, wherein the button is in an inverted trapezoid shape.
11. The split hemostix according to claim 1, wherein the grooves are circumferentially arranged along the joint, and the protrusions are circumferentially and uniformly distributed along the safety sleeve.
12. The split hemostix according to claim 1, wherein the grooves are annular grooves and the protrusions are four.
13. The split-type hemostix of claim 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, further comprising a spring axially mounted between the safety sleeve and the barrel; a space suitable for the axial arrangement of the spring is arranged between the safety sleeve and the cylinder body; and a limiting component for limiting the spring upwards is formed between the safety sleeve and the barrel, and a flange at the lower end of the barrel limits the spring downwards.
14. The split type hemostix according to claim 13, wherein the safety sleeve comprises an upper sleeve and a lower sleeve, the inner diameter of the upper sleeve is smaller than the inner diameter of the lower sleeve, and a joint is formed between the upper sleeve and the lower sleeve and constitutes the position-limiting member.
15. The split hemostix according to claim 14, wherein the push rod is provided at its upper end with a cross head for easy breaking.
16. The split type hemostix according to claim 15, wherein a piston seat for closing the bottom end of the cylinder is installed at the top end of the push rod, and a chuck with four retaining grooves is extended from the lower end of the piston seat; the crosshead is clamped in the chuck.
17. The split type hemostix according to claim 16, wherein the lower end of the cylinder is provided with a tail plug for limiting the piston seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110260131.XA CN102406505B (en) | 2011-09-05 | 2011-09-05 | Split-type hemostix with safety protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110260131.XA CN102406505B (en) | 2011-09-05 | 2011-09-05 | Split-type hemostix with safety protection device |
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| CN102406505A CN102406505A (en) | 2012-04-11 |
| CN102406505B true CN102406505B (en) | 2014-04-02 |
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| CN201110260131.XA Active CN102406505B (en) | 2011-09-05 | 2011-09-05 | Split-type hemostix with safety protection device |
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|---|---|---|---|---|
| CN103330975B (en) * | 2013-07-17 | 2015-08-05 | 魏颖德 | Simple safety self-destruction syringe |
| CN103736175B (en) * | 2014-02-12 | 2015-08-19 | 刘友红 | Disposable anti-stabbed syringe |
| CN106390233B (en) * | 2016-08-30 | 2023-05-05 | 成都普什医药塑料包装有限公司 | Disposable automatic pop-up medical needle |
| CN114748070A (en) * | 2022-04-11 | 2022-07-15 | 温州医科大学附属第一医院 | Department of respiration inspects with high efficiency artery blood gas collector |
| CN114732408A (en) * | 2022-04-11 | 2022-07-12 | 温州医科大学附属第一医院 | An arterial blood gas collection device to prevent iatrogenic injury |
| CN114748071A (en) * | 2022-04-11 | 2022-07-15 | 温州医科大学附属第一医院 | Novel arterial blood-gas needle for respiration and critical medical department examination |
| WO2024061026A1 (en) * | 2022-09-21 | 2024-03-28 | 普昂(杭州)生命科技有限公司 | Safety syringe |
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| Publication number | Publication date |
|---|---|
| CN102406505A (en) | 2012-04-11 |
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Effective date of registration: 20160729 Address after: 522322 Guangdong province Puning City quicksand North Nanyuan Industrial Zone Patentee after: GUANGDONG HAIOU MEDICAL APPARATUS STOCK Co.,Ltd. Address before: 518104, No. 267-269, Wan An Road, Wan Feng Village, manholes Town, Guangdong, Shenzhen Patentee before: Wang Xianzong |
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Denomination of invention: Split type blood sampler with safety protection device Effective date of registration: 20230324 Granted publication date: 20140402 Pledgee: Agricultural Bank of China Limited Puning City Branch Pledgor: GUANGDONG HAIOU MEDICAL APPARATUS STOCK Co.,Ltd. Registration number: Y2023980036077 |