Automatic storage device for pen blood lancet

Abstract

The application discloses a pen type blood taking needle rotation tripping type automatic storage device, which comprises a blood taking needle puncture assembly and a storage device assembly, the blood taking needle puncture assembly comprises a cylindrical needle holder, a needle seat body and a stop ring, and the storage device assembly comprises a needle taking device, a rotating sleeve and a storage sleeve. The automatic storage device is used when blood taking is completed, the blood taking needle is not required to be removed from the blood vessel of a patient, one end of the rotating sleeve of the device is inserted into the inner cavity of the needle holder from the opening of the needle holder, the blood taking needle is completely pulled into the hole cavity formed by the needle holder and the storage sleeve by operating the storage device, the needle tube is not exposed, and thus the storage of the blood taking needle is realized. The device has the advantages of simple structure, convenient operation, safety and reliability and low cost.

Description

Technical Field

[0001] This invention relates to a pen-type blood collection needle, and more particularly to a rotating release-type automatic storage device for the pen-type blood collection needle. Background Technology

[0002] In clinical medicine, a commonly used pen-type vacuum blood collection needle consists of a needle hub, a puncture needle tube and a blood collection needle tube fixed to both ends of the needle hub, and a sealing sleeve fitted over the blood collection needle tube. The blood collection needle tube's fixed end on the needle hub has external locking threads. It is used in conjunction with a cylindrical needle holder. One end of the needle holder has internal locking threads for the blood collection needle, while the other end is completely open for inserting the vacuum blood collection tube. Before blood collection, remove the protective sleeve from the blood collection needle tube to expose the blood collection end and the locking threads on the needle hub. Insert the blood collection needle into the locking end of the needle holder and tighten it. Then remove the outer protective sleeve from the puncture needle tube. This completes the assembly of the blood collection needle. During blood collection, the puncture needle is inserted into a blood vessel. Once blood return is observed at the needle hub, it indicates the needle tip has entered the blood vessel. At this point, the vacuum blood collection tube can be inserted through the open end of the needle holder for blood collection. After collection, the blood collection needle is removed from the body. To prevent accidental injury from the blood-stained needle and to prevent blood contamination of the environment, the previously removed protective cap must be replaced with the puncture needle. This completes the use of the blood collection needle. The process of replacing the protective cap during use makes it easy to accidentally injure the operator, causing psychological stress. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a simple and safe pen-type blood collection needle rotation release automatic storage device.

[0004] An automatic storage device for pen-type blood collection needles with a rotating release mechanism includes a blood collection needle puncture assembly and a storage device assembly. The blood collection needle puncture assembly includes a cylindrical needle holder, a needle base body, and a stop ring. The storage device assembly includes a needle extractor, a rotating sleeve, and a storage sleeve. The needle base body is installed at the semi-closed end of the cylindrical needle holder. A stop ring swing wing mounting hole is provided on the cylindrical wall of the end of the cylindrical needle holder where the needle base body is installed. An anti-rotation groove is provided on the mounting hole of the needle base body of the cylindrical needle holder, which cooperates with the anti-rotation rib on the needle base body. An axially stop elastic protrusion is provided on the inner wall of the cylindrical needle holder near the mounting hole of the needle base body. The protrusion protrudes inward towards the inside of the rotating housing, and the top surface of the protrusion is the stop surface. The pen-type blood collection needle is installed on the needle base body. An axially extending anti-rotation rib is provided on the outer circumferential surface of the large end of the needle base body used to install the pen-type blood collection needle. A portion of the anti-rotation ribs are symmetrically arranged. The end of the rib furthest from the large end of the needle holder body is provided with a stopper perpendicular to the anti-rotation rib. An annular flange is provided on the outer circumference of the small end of the needle holder body. The flange end face near the large end of the needle holder body is perpendicular to the axis, and the far end face of the flange furthest from the large end of the needle holder body is a conical surface. One end face of the stop ring is provided with symmetrical fan-shaped swing wings. The swing wings extend from the inner cavity of the stop ring outwards, protruding onto a cylindrical surface. A connection is provided on the bottom plane of the swing wings to the inner side of the constricted opening of the stop ring body. The stop plate extends to the fan-shaped side, and the other end of the stop ring is provided with concave and convex teeth that cooperate with the rotating sleeve. The stop ring is installed between the needle holder and the needle holder. The bottom surface of the swing wing of the stop ring is fastened to the mounting hole of the swing wing of the stop ring. At the same time, the stop plate on the swing wing also abuts against the stop stop on the needle holder. The stop ring, the needle holder and the needle holder are in a sliding contact fit. Under the action of rotational external force, the stop ring can rotate around the axis of the needle holder.

[0005] The storage sleeve is a stepped rotary tube. At a certain position from the end face of the small end of the storage sleeve, there are symmetrically arranged cylindrical push pins. Between the push pins, an "L"-shaped sliding groove is opened on the wall of the small end. The groove is connected to the inner cavity of the tube. The end of the axial longitudinal groove is also connected to the inner cavity of the large end. The circumferential transverse groove accommodates the sliding pin of the needle extractor to stop sliding within it.

[0006] One end of the needle extractor can be fitted into one end of the needle holder body. An elastic inner hook protrusion is provided on the inner wall of the fitting end of the needle extractor. When in use, the elastic inner hook protrusion can hook onto the annular flange on the small end of the needle holder body. A cylindrical sliding pin is provided at the other end of the needle extractor and is symmetrically arranged perpendicular to the axis of the needle extractor.

[0007] The actuating sleeve is a cylindrical body with an annular flange at one end of the outer periphery of the cylindrical body. On the end face of the cylindrical body with the annular flange, there are concave and convex teeth that cooperate with the stop ring. On the outer periphery of the actuating sleeve, there is also an oblique sliding groove at a certain angle to the axis of the actuating sleeve. On the other end of the actuating sleeve, there is also a longitudinal sliding groove extending along its axial direction.

[0008] The needle extractor is located inside the small end of the stepped cylindrical receiving sleeve. Symmetrical sliding pins on the needle extractor are positioned in an "L"-shaped groove on the small end of the receiving sleeve and can rotate within the L-shaped groove as needed. The rotating sleeve has a longitudinally open groove, one end of which is fitted into the small end of the receiving sleeve. The sliding pin on the needle extractor located inside the receiving sleeve extends into the open longitudinal groove of the rotating sleeve. The push pin on the outer circumference of the small end of the receiving sleeve slides into the oblique groove on the rotating sleeve. The rotating sleeve and the small end of the receiving sleeve are slidably connected. One end of the spring is connected to the needle extractor, and the other end of the spring is located on the end cap of the receiving sleeve.

[0009] In use, the automatic retractable pen-type blood collection needle rotating release device of the present invention involves holding the needle holder of the blood collection needle assembly, removing the outer protective sleeve of the puncture needle tube, inserting the puncture needle tube into the desired blood vessel, and waiting for blood return before inserting a vacuum blood collection tube to collect blood. After blood collection, there is no need to remove the blood collection needle from the patient's blood vessel. With one hand still supporting the blood collection needle assembly, and the other hand holding the blood collection needle retractable device, insert the end of the device with the rotating release sleeve into the inner cavity of the needle holder through the opening. Then, using the palm of the hand against the end face of the retractable device protruding from the needle holder, forcefully push the retractable device further into the needle holder. Next, the annular flange on the rotating release sleeve crawls over the elastic convex latch inside the needle holder cavity. The elastic convex latch returns to its original position, and the top surface of the elastic convex latch abuts against the rotating release sleeve. The annular flange is fitted, preventing the rotating sleeve from retracting. At this point, the protruding teeth on the rotating sleeve also insert into the groove of the stop ring, with the tooth tips abutting against the bottom surface of the notch. The axial sliding of the rotating sleeve relative to the needle holder is restricted. Continuing to push the storage device allows the storage sleeve to slide further inward, and the needle extractor moves inward along with the storage sleeve. The inner hook protrusion on the needle extractor gradually approaches the needle seat body, while the pushing pin on the storage sleeve, through the oblique sliding groove on the rotating sleeve, forces the rotating sleeve to rotate, and the rotating sleeve... The engagement of the convex teeth drives the stop ring to rotate, causing the stop plate on the stop ring to slide against the stop stop on the needle seat body. Simultaneously, the actuating sleeve, via its longitudinal groove, drives the needle extractor to rotate. The sliding pin on the needle extractor also slides within the transverse groove on the receiving sleeve. The receiving sleeve continues to advance inward until the pushing pin on the receiving sleeve contacts the actuating sleeve. The actuating sleeve then rotates, causing the stop plate on the stop ring to continue sliding against the stop stop on the needle seat body until the stop stop 3.3 on the needle seat body disengages from the stop ring. When the upper stop plate engages with the restraint, the inner hook protrusion of the needle retriever crawls over the annular flange on the small end of the needle holder and hooks with the flange. At the same time, the sliding pin also slides to the end in the transverse groove on the storage sleeve as the rotating sleeve is turned. The sliding pin loses its axial restraint. Under the action of the storage tension spring, the needle retriever pulls the needle holder into the inner cavity of the storage device, causing the blood collection needle on it to slide into the storage device as well. In this way, the blood collection needle is completely pulled into the cavity formed by the needle holder and the storage sleeve, and the needle tube is not exposed.

[0010] Multiple axially sliding guide ribs are provided on the inner wall of the cylindrical needle holder near the other open end, and guide ribs that cooperate with the guide ribs on the needle holder are provided on the outer circumferential surface of the receiving sleeve.

[0011] A handle is provided at the open end of the needle holder.

[0012] The stop ring swivel mounting hole at the end of the cylindrical needle holder is specifically designed such that a ring is connected to the housing of the cylindrical needle holder by a symmetrical connecting lug, and the gap between the ring and the housing between the two symmetrical connecting lugs constitutes the stop ring swivel mounting hole.

[0013] The needle holder is a thin-walled structure with elasticity.

[0014] The aforementioned storage sleeve has a thin-walled structure with elasticity.

[0015] In summary, the present invention has the following advantages over the prior art:

[0016] The automatic storage device for pen-type blood collection needles with rotating release mechanism of the present invention has the advantages of simple structure, convenient operation, safety and reliability, and low cost. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the pen-type blood collection needle puncture assembly of the present invention.

[0018] Figure 2 yes Figure 1 A sectional view.

[0019] Figure 3 This is a schematic diagram of the storage device component structure of the present invention.

[0020] Figure 4 yes Figure 3 A sectional view.

[0021] Figure 5 This is a schematic diagram of the needle holder.

[0022] Figure 6 yes Figure 5 Another perspective diagram.

[0023] Figure 7 yes Figure 5 Sectional view.

[0024] Figure 8 This is a schematic diagram of the needle holder.

[0025] Figure 9 yes Figure 8 A front view of the needle holder body.

[0026] Figure 10 This is a schematic diagram of a retaining ring.

[0027] Figure 11 This is a schematic diagram of the storage sleeve.

[0028] Figure 12 yes Figure 11 Another perspective diagram.

[0029] Figure 13 yes Figure 11 A sectional view.

[0030] Figure 14 This is a schematic diagram of a needle extractor.

[0031] Figure 15 yes Figure 14 Cross-sectional view.

[0032] Figure 16 This is a schematic diagram of the rotating sleeve.

[0033] Figure 17 This is a schematic diagram of a storage tension spring.

[0034] Figure 18 This is a schematic diagram of the end cap for storing the sleeve.

[0035] Figure 19 yes Figure 18 A sectional view.

[0036] Figure 20 This is a schematic diagram of the spring retaining pin.

[0037] Figure 21 This is a schematic diagram of the blood collection needle assembly process.

[0038] Figure 22 This is a schematic diagram of the blood collection needle assembly.

[0039] Figure 23 This is a schematic diagram showing the combination of the blood collection needle puncture assembly and the storage device assembly.

[0040] Figure 24 yes Figure 23 Cross-sectional view.

[0041] Figure 25 yes Figure 23 A partial cross-sectional view of the needle holder.

[0042] Figure 26 This is a schematic diagram showing the sliding pin on the needle extractor sliding within the horizontal groove on the storage sleeve.

[0043] Figure 27 This is a schematic diagram of the inner cavity of the blood collection needle storage device.

[0044] Figure 28 yes Figure 27 Partial sectional view.

[0045] Figure 29 yes Figure 27 A sectional view. Detailed Implementation

[0046] The present invention will now be described in more detail with reference to the embodiments.

[0047] Example 1

[0048] An automatic storage device for pen-type blood collection needles with a rotating release mechanism includes a blood collection needle puncture assembly and a storage device assembly. The blood collection needle puncture assembly includes a cylindrical needle holder, a needle base body, and a stop ring. The storage device assembly includes a needle extractor, a rotating sleeve, and a storage sleeve. The needle base body is installed at the semi-closed end of the cylindrical needle holder. A stop ring swing wing mounting hole is provided on the cylindrical wall of the end of the cylindrical needle holder where the needle base body is installed. An anti-rotation groove is provided on the mounting hole of the needle base body of the cylindrical needle holder, which cooperates with the anti-rotation rib on the needle base body. An axially stop elastic protrusion is provided on the inner wall of the cylindrical needle holder near the mounting hole of the needle base body. The protrusion protrudes inward towards the inside of the rotating housing, and the top surface of the protrusion is the stop surface. The pen-type blood collection needle is installed on the needle base body. An axially extending anti-rotation rib is provided on the outer circumferential surface of the large end of the needle base body used to install the pen-type blood collection needle. A portion of the anti-rotation ribs are symmetrically arranged. The end of the rib furthest from the large end of the needle holder body is provided with a stopper perpendicular to the anti-rotation rib. An annular flange is provided on the outer circumference of the small end of the needle holder body. The flange end face near the large end of the needle holder body is perpendicular to the axis, and the far end face of the flange furthest from the large end of the needle holder body is a conical surface. One end face of the stop ring is provided with symmetrical fan-shaped swing wings. The swing wings extend from the inner cavity of the stop ring outwards, protruding onto a cylindrical surface. A connection is provided on the bottom plane of the swing wings to the inner side of the constricted opening of the stop ring body. The stop plate extends to the fan-shaped side, and the other end of the stop ring is provided with concave and convex teeth that cooperate with the rotating sleeve. The stop ring is installed between the needle holder and the needle holder. The bottom surface of the swing wing of the stop ring is fastened to the mounting hole of the swing wing of the stop ring. At the same time, the stop plate on the swing wing also abuts against the stop stop on the needle holder. The stop ring, the needle holder and the needle holder are in a sliding contact fit. Under the action of rotational external force, the stop ring can rotate around the axis of the needle holder.

[0049] The storage sleeve is a stepped rotary tube. At a certain position from the end face of the small end of the storage sleeve, there are symmetrically arranged cylindrical push pins. Between the push pins, an "L"-shaped sliding groove is opened on the wall of the small end. The groove is connected to the inner cavity of the tube. The end of the axial longitudinal groove is also connected to the inner cavity of the large end. The circumferential transverse groove accommodates the sliding pin of the needle extractor to stop sliding within it.

[0050] One end of the needle extractor can be fitted into one end of the needle holder body. An elastic inner hook protrusion is provided on the inner wall of the fitting end of the needle extractor. When in use, the elastic inner hook protrusion can hook onto the annular flange on the small end of the needle holder body. A cylindrical sliding pin is provided at the other end of the needle extractor and is symmetrically arranged perpendicular to the axis of the needle extractor.

[0051] The actuating sleeve is a cylindrical body with an annular flange at one end of the outer periphery of the cylindrical body. On the end face of the cylindrical body with the annular flange, there are concave and convex teeth that cooperate with the stop ring. On the outer periphery of the actuating sleeve, there is also an oblique sliding groove at a certain angle to the axis of the actuating sleeve. On the other end of the actuating sleeve, there is also a longitudinal sliding groove extending along its axial direction.

[0052] The needle extractor is located inside the small end of the stepped cylindrical receiving sleeve. Symmetrical sliding pins on the needle extractor are positioned in an "L"-shaped groove on the small end of the receiving sleeve and can rotate within the L-shaped groove as needed. The rotating sleeve has a longitudinally open groove, one end of which is fitted into the small end of the receiving sleeve. The sliding pin on the needle extractor located inside the receiving sleeve extends into the open longitudinal groove of the rotating sleeve. The push pin on the outer circumference of the small end of the receiving sleeve slides into the oblique groove on the rotating sleeve. The rotating sleeve and the small end of the receiving sleeve are slidably connected. One end of the spring is connected to the needle extractor, and the other end of the spring is located on the end cap of the receiving sleeve.

[0053] The needle holder 2 as described Figure 5 , Figure 6 , Figure 7 :

[0054] It is a cylindrical thin-shell rotating body 2.1, made of plastic with a certain degree of elasticity. One end has a ring 2.4 connected to the shell through a symmetrical connecting ear 2.5, forming a semi-closed end. The inner hole 2.8 of the ring is the needle seat mounting hole, the diameter of which is larger than the maximum outer diameter of the blood collection needle seat. The inner side wall has a plurality of anti-rotation grooves 2.7, which match the anti-rotation ribs on the needle seat body. The other end is a completely open opening 2.3 for the blood collection tube to enter and exit. An operating handle 2.2 is provided on the open end face.

[0055] 2.6 is a notch formed at the end of the rotating housing between the symmetrical connecting lugs 2.5, used to fasten the swing blade on the stop ring 4.

[0056] 2.9 is an axial stop elastic convex bracket, which protrudes into the inside of the rotating housing, and the top surface of the convex bracket is the stop surface.

[0057] 2.10 consists of a plurality of axial sliding guide ribs on the inner wall of the rotating housing, with the gap between the guide ribs engaging with the protruding guide ribs 7.1 on the receiving sleeve 7 for sliding.

[0058] The needle seat body 3 as described Figure 8 , Figure 9

[0059] It is a plug-like body with a central through hole, made of plastic or rigid material.

[0060] 3.1 is the tightening of the internal thread of the blood collection needle and needle holder 2.

[0061] 3.2 refers to the plurality of anti-rotation ribs provided on the outer circumferential wall of the large end of the needle holder body.

[0062] 3.3 is an axial stop stop provided at the end of the symmetrical anti-rotation rib away from the large end face. When the large end face of the stop stop is assembled, it slides and abuts against the stop plate 4.3 on the stop ring 4.

[0063] 3.4 is an annular flange, with the proximal flange face perpendicular to the axis and the distal flange face being a conical surface.

[0064] The stop ring 4 is as follows Figure 10

[0065] It is a cylindrical ring with one end slightly narrowed. A fan-shaped gyroscope 4.2 is symmetrically arranged on the end face of the ring. The gyroscope extends from the inside out and protrudes from the cylindrical surface. A stop plate 4.3 is provided on the bottom plane of the gyroscope, which is connected to the inner side of the narrowed ring and extends to the fan-shaped side. At the other end of the ring, there are a plurality of rectangular notches 4.1, which are engaged with the protruding teeth on the actuating sleeve 6.

[0066] The aforementioned storage sleeve 7, as Figure 11 , Figure 12 , Figure 13

[0067] It is a stepped, thin-walled rotary tube made of plastic with a certain degree of elasticity.

[0068] 7.1 refers to a plurality of guide ribs located on the outer circumference of the large-end tube near the tip, which correspond to the concave and convex guide ribs 2.10 inside the needle holder.

[0069] 7.2 refers to cylindrical push pins symmetrically arranged at a certain position on the small end tube body from the end face.

[0070] 7.3 is an "L"-shaped groove opened on the small end wall between the push pins 7.2. The groove is connected to the inner cavity of the tube. The end of the axial longitudinal groove is also connected to the inner cavity of the large end. The circumferential transverse groove accommodates the sliding pin 5.1 on the needle extractor 5 and stops its sliding movement within it.

[0071] The needle extractor 5, as described above Figure 14 , Figure 15

[0072] It is a rotating body with a hollow outer periphery at both ends, one end face is open, and the inner cavity is connected to the outside. It is made of a certain elastic plastic, and the size of the inner cavity is sufficient to allow the blood collection needle, including its sealing sleeve, to be inserted.

[0073] 5.3 is a symmetrical elastic inner hook protrusion set on the large end wall;

[0074] 5.1 is a symmetrical cylindrical sliding pin located at the outer periphery step, which stops inside the "L" on the receiving sleeve during assembly. The pin end protrudes a certain distance from the outer periphery wall of the receiving sleeve, and the distance between the two pin ends is similar to the outer periphery dimension of the rotating sleeve 6;

[0075] 5.2 is the annular mounting groove for fixing the tension spring.

[0076] The aforementioned rotating sleeve 6, as Figure 16

[0077] It is a thin-walled short sleeve with a cylindrical flange 6.2 at one end, on which are a plurality of protruding teeth 6.1. The outer cylindrical surface dimension of the protruding teeth is smaller than the inner ring dimension of the needle holder cavity, allowing it to enter the inner cavity of the needle holder along with the storage sleeve and fit into the stop sleeve 4. Two oblique grooves 6.2 are distributed circumferentially opposite each other on the sleeve wall. The grooves connect to the inner cavity of the sleeve and accommodate the sliding of the push pin 7.2 on the storage sleeve. The circumferential angular displacement of the grooves is sufficient to cause the stop stop on the stop ring and the stop pin on the needle extractor to disengage from their respective stop constraints. At the same time, the axial displacement of the grooves is sufficient for the storage sleeve to extend forward, causing the needle extractor 5 to grasp the needle seat. 6.4

[0078] The aforementioned storage tension spring 8, as Figure 17

[0079] It can be a spiral coiled tension spring or a bar-shaped spring. One end of the spring is provided with an annular fixed ring 8.1, the end face of the ring is perpendicular to the tension spring axis and has a certain distance from the end face of the tension spring. The other end is a fixed end 8.2 that is coiled inward and has a small hole in the middle.

[0080] The storage sleeve end cap 9 is as follows Figure 18 , Figure 19

[0081] It is a hemispherical shell with a stepped flange 9.1 at the open end, a tension spring fixing hole 9.2 at the top of the shell, and a concave snap-fit ​​stepped surface 9.3 at the junction of the fixing hole and the outer periphery of the top of the shell.

[0082] The spring retaining pin 10 is as follows Figure 20

[0083] It is a rivet-shaped pin with a fastening flange 10.1 at the small end.

[0084] I. Blood collection needle assembly

[0085] like Figure 2 , Figure 21 , Figure 22As shown, first, insert the needle holder body 3, with one end having the anti-rotation rib 3.2 facing the opening 2.3 of the needle holder 2, into the inner cavity of the needle holder, and push it forward. Align the anti-rotation rib on the needle holder body with the anti-rotation groove 2.7 on the needle holder, and align the stop stop 3.3 with the notch 2.6 on the semi-closed end of the needle holder. Then push it further inward until the end of the needle holder body with the anti-rotation rib is inserted into the needle holder body mounting hole 2.8 on the needle holder, and the anti-rotation rib is also inserted into the anti-rotation groove on the needle holder. The large end face of the needle holder body abuts against the inner surface of the semi-closed end of the needle holder. Then, place the stop ring 4, with one end having the swing wing 4.2 facing the opening 2.3 of the needle holder, and align the swing wing on the stop ring with the notch 2.6 on the semi-closed end of the needle holder. Simultaneously, the swing wing should also be aligned with... With the stop stop 3.3 on the needle holder body in place, push the stop ring into the inner cavity of the needle holder with a little force. Since both the needle holder and the stop ring are made of a certain elastic material, the swing wing on the stop ring can be forced to slide over the inner wall of the needle holder until it reaches the semi-closed end notch of the needle holder. At this point, the swing wing on the stop ring is released from pressure, and both elastically recover. The bottom surface of the swing wing on the stop ring engages with the notch end face of the needle holder. At the same time, the stop plate on the swing wing also abuts against the stop stop 3.3 on the needle holder body. In this way, the stop ring will not axially disengage from the needle holder, and the axial direction of the needle holder body is also restricted, preventing it from disengaging from the needle holder. The stop ring, the needle holder, and the needle holder body are in a sliding contact fit. Under the action of rotational external force, the stop ring can rotate around the axis of the needle holder. Next, remove the protective sleeve from the lancet tube to expose the lancet end, where the external thread will also be visible. Then, insert the lancet end into the internal thread hole 3.1 on the needle holder and tighten the lancet. The lancet assembly is now complete. To collect blood, simply remove the protective sleeve from the lancet tube.

[0086] II. Assembly of Blood Collection Needle Storage Device

[0087] like Figure 3 , Figure 4As shown, first, the spring fixing pin 10 is installed into the inner hole of the blood collection needle storage tension spring 8, and the small end of the fixing pin is inserted into the small hole of the spring fixing end 8.2. Then, the fixing ring 8.1 of the other end of the spring is sleeved with the small end of the needle extractor 5 and fixed in the tension spring fixing annular mounting groove 5.2 of the small end of the needle extractor. Next, the needle extractor is oriented towards the large port of the storage sleeve 7, and the needle extractor and spring assembly are rotated into the inner cavity of the storage sleeve. The symmetrical sliding pin 5.1 on the needle extractor is inserted into the longitudinal groove hole of the "L"-shaped sliding groove 7.3 on the small end of the storage sleeve 7, to the bottom of the groove hole. Then, the needle extractor is rotated, and the symmetrical sliding pin 5.1 on the needle extractor is rotated into the transverse groove hole of the "L"-shaped sliding groove 7.3 on the small end of the storage sleeve 7, to the end of the groove hole. Then, with the small end of the receiving sleeve facing the end of the rotating sleeve 6 with the open longitudinal groove 6.4, insert it into the rotating sleeve. At the same time, align the sliding pin on the needle extractor installed inside the receiving sleeve with the open longitudinal groove 6.4 of the rotating sleeve 6, forcing the pushing pin 7.2 on the small end of the receiving sleeve to slide into the oblique groove 6.3 on the rotating sleeve, and position the pushing pin 7.2 at the closest end of the oblique groove in the insertion assembly direction. In this way, the rotating sleeve restricts the free circumferential rotation of the needle extractor, and the rotating sleeve and the small end of the receiving sleeve are in a sliding sleeve connection. Next, with the help of a tool, pull the spring end with the spring fixing pin out of the large port of the receiving sleeve. With the open side of the receiving sleeve end cap 9 facing the pulled-out spring end, insert the small end of the spring fixing pin into the small hole 9.2 on the end cap, and make the fastening flange 10.1 on the fixing pin fasten and fix it to the fastening stepped surface 9.3 on the end cap. Finally, snap the stepped flange on end cap 9 into the large port of the storage sleeve and glue it in place. The assembly of the storage sleeve assembly is now complete.

[0088] The storage device in this embodiment is used as follows:

[0089] When blood needs to be collected from a patient, hold the needle holder of the blood collection needle assembly, remove the outer protective sleeve of the puncture needle tube of blood collection needle 1, insert the puncture needle tube into the desired blood vessel, and wait for blood return before inserting the vacuum blood collection tube to collect blood. After blood collection is complete, there is no need to remove the blood collection needle from the patient's blood vessel. Continue to hold the blood collection needle assembly with one hand, and hold the blood collection needle storage device with the other hand. Insert the end of the device with the rotating sleeve into the inner cavity of the needle holder through the opening, and gently rotate the storage device appropriately so that the guide rib 7.1 on the storage sleeve is aligned with the gap between the guide ribs on the inner wall of the needle holder. Figure 23As shown. Then, using the palm of your hand to press against the end face of the part of the storage device protruding from the needle holder, with your index and middle fingers gripping the handles on the needle holder respectively, forcefully push the storage device into the needle holder using the palm of your hand. Next, the cylindrical flange 6.2 on the rotating sleeve crawls over the elastic protrusion 2.9 on the needle holder. The elastic protrusion returns to its original position, and the top surface of the elastic protrusion abuts against the cylindrical flange 6.2 on the rotating sleeve, preventing the rotating sleeve from retracting and dislodging. At this time, the protruding tooth 6.1 on the rotating sleeve also inserts into the notch 4.1 on the stop ring 4, and the tooth tip abuts against the bottom surface of the notch. The axial sliding of the rotating sleeve relative to the needle holder is restricted, as shown. Figure 24 , Figure 25 As shown. Continuing to push the storage device, the storage sleeve of the storage device can continue to slide inwards, and the needle extractor 3 moves inwards along with the storage sleeve. The inner hook protrusion 5.3 on the needle extractor gradually approaches the needle holder body, while the pushing pin on the storage sleeve forces the rotating sleeve 6 to rotate through the oblique sliding groove 6.3 on the rotating sleeve. The rotating sleeve, through the engagement of the convex teeth, drives the stop ring 4 to rotate as well. The stop plate 4.3 on the stop ring slides against the stop plate 3.3 on the needle holder body. Simultaneously, the rotating sleeve also drives the needle extractor to rotate through its longitudinal sliding groove, and the sliding pin on the needle extractor also slides within the transverse sliding groove on the storage sleeve. Figure 26 As shown. The receiving sleeve continues to be pushed inward until the pushing pin on the receiving sleeve touches the actuating sleeve. As the actuating sleeve rotates, the stop plate 4.3 on the stop ring and the stop stop 3.3 on the needle seat body continue to slide until the stop stop 3.3 on the needle seat body disengages from the stop plate 4.3 on the stop ring. At this time, the inner hook protrusion on the needle retriever crawls over the flange 3.4 on the small end of the needle seat body and hooks with the flange. Moreover, the sliding pin also slides to the end in the transverse sliding groove on the receiving sleeve as the actuating sleeve moves. The sliding pin loses its axial constraint. Under the action of the receiving tension spring, the needle retriever pulls the needle seat body into the inner cavity of the receiving device, causing the blood collection needle on it to slide into the receiving device as well. In this way, the blood collection needle is completely pulled into the cavity formed by the needle holder and the receiving sleeve, and the needle tube is not exposed. Figure 27 , Figure 28 , Figure 29 As shown.

[0090] The parts not described in this embodiment are the same as those in the prior art.

Claims

1. A pen-type blood collection needle rotating release automatic storage device, comprising a blood collection needle puncture assembly and a storage device assembly, characterized in that: The blood collection needle puncture assembly includes a cylindrical needle holder, a needle base body, and a stop ring. The storage device assembly includes a needle extractor, a rotating sleeve, and a storage sleeve. The needle base body is installed on the semi-closed end of the cylindrical needle holder. A stop ring swing wing mounting hole is provided on the cylindrical wall of the end of the cylindrical needle holder where the needle base body is installed. An anti-rotation groove is provided on the mounting hole of the needle base body of the cylindrical needle holder, which cooperates with the anti-rotation rib on the needle base body. An axially stop elastic protrusion is provided on the cylindrical wall of the inner cavity of the cylindrical needle holder near the mounting hole of the needle base body. The protrusion protrudes towards the inner side of the rotating housing, and the top surface of the protrusion is the stop surface. The pen-type blood collection needle is installed on the needle base body. An axially extending anti-rotation rib is provided on the outer circumferential surface of the large end of the needle base body used to install the pen-type blood collection needle. At the ends of a portion of the symmetrical anti-rotation ribs away from the large end of the needle base body, a stop ring is provided. The stop ring has a convex rib perpendicular to the stop ring. It has an annular flange on the outer circumference of the small end of the needle holder body. The flange end face near the large end of the needle holder body is perpendicular to the axis, and the flange far from the large end of the needle holder body is a conical surface. One end face of the stop ring has a symmetrical fan-shaped swing wing. The swing wing extends from the inner cavity of the stop ring outward and protrudes from the cylindrical surface. The bottom plane of the swing wing has a stop plate that connects to the inner side of the stop ring body and extends outward to the fan-shaped side. The other end of the stop ring has a toothed joint that cooperates with the rotating sleeve. The stop ring is installed between the needle holder body and the needle holder. The bottom surface of the swing wing of the stop ring is fastened to the mounting hole of the swing wing of the stop ring. At the same time, the stop plate on the swing wing also abuts against the stop ring on the needle holder body. The stop ring, the needle holder and the needle holder body are in a sliding contact fit. Under the action of rotational external force, the stop ring rotates around the axis of the needle holder. The storage sleeve is a stepped rotary tube. At a certain position from the end face of the small end of the storage sleeve, there are symmetrically arranged cylindrical push pins. Between the push pins, an "L"-shaped sliding groove is opened on the wall of the small end. The groove is connected to the inner cavity of the tube. The end of the axial longitudinal groove is also connected to the inner cavity of the large end. The circumferential transverse groove accommodates the sliding pin of the needle extractor to stop sliding within it. One end of the needle extractor can be fitted into one end of the needle holder body. An elastic inner hook protrusion is provided on the inner wall of the fitting end of the needle extractor. When in use, the elastic inner hook protrusion can hook onto the annular flange on the small end of the needle holder body. A cylindrical sliding pin is provided at the other end of the needle extractor and is symmetrically arranged perpendicular to the axis of the needle extractor. The actuating sleeve is a cylindrical body with an annular flange at one end of the outer periphery of the cylindrical body. On the end face of the cylindrical body with the annular flange, there are concave and convex teeth that cooperate with the stop ring. On the outer periphery of the actuating sleeve, there is also an oblique sliding groove at a certain angle to the axis of the actuating sleeve. On the other end of the actuating sleeve, there is also a longitudinal sliding groove extending along its axial direction. The needle extractor is located inside the small end of the stepped cylindrical receiving sleeve. Symmetrical sliding pins on the needle extractor are positioned in an "L"-shaped groove on the small end of the receiving sleeve and can rotate within the L-shaped groove as needed. The rotating sleeve has a longitudinally open groove at one end, which is fitted into the small end of the receiving sleeve. The sliding pin on the needle extractor located inside the receiving sleeve extends into the open longitudinal groove of the rotating sleeve. The push pin on the outer circumference of the small end of the receiving sleeve slides into the oblique groove on the rotating sleeve. The rotating sleeve and the small end of the receiving sleeve are slidably connected. One end of the spring is connected to the needle extractor, and the other end of the spring is located on the end cap of the receiving sleeve.

2. The automatic storage device for pen-type blood collection needles with rotating release mechanism according to claim 1, characterized in that: Multiple axially sliding guide ribs are provided on the inner wall of the cylindrical needle holder near the other open end, and guide ribs that cooperate with the guide ribs on the needle holder are provided on the outer circumferential surface of the receiving sleeve.

3. The automatic storage device for pen-type blood collection needles with rotating release mechanism according to claim 2, characterized in that: A handle is provided at the open end of the needle holder.

4. The automatic storage device for pen-type blood collection needles with rotating release mechanism according to claim 3, characterized in that: The stop ring swivel mounting hole at the end of the cylindrical needle holder is specifically designed such that a ring is connected to the housing of the cylindrical needle holder by a symmetrical connecting lug, and the gap between the ring and the housing between the two symmetrical connecting lugs constitutes the stop ring swivel mounting hole.

5. The automatic storage device for pen-type blood collection needles with rotating release mechanism according to claim 4, characterized in that: The aforementioned storage sleeve has a thin-walled structure with elasticity.

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