CN217827873U - Pen type blood taking needle rotation trip type automatic storage device - Google Patents

Abstract

The utility model discloses a pen-type blood taking needle rotates automatic storage device of trip formula, it is including blood taking needle puncture subassembly and storage device subassembly, blood taking needle puncture subassembly including cylindric needle holder, needle holder body and retaining ring, the storage device subassembly including get the needle ware, stir and change cover and storage sleeve pipe. The utility model discloses an automatic storage device finishes when the blood sampling when using, need not to withdraw the blood taking needle the patient's blood vessel, has to stir rotating sleeve one end from the uncovered needle holder inner chamber that inserts of needle holder with the device, through operation storage device, can realize drawing in the vestibule that needle holder and storage sleeve constitute jointly with the blood taking needle completely, the needle tubing does not expose to realize accomodating of blood taking needle. The device has the advantages of simple structure, convenient operation, safety, reliability and low cost.

Description

Pen type blood taking needle rotation trip type automatic storage device

Technical Field

The utility model relates to a pen type blood taking needle, in particular to a pen type blood taking needle rotating and trip type automatic storage device.

Background

In clinical practice, there is a pen type vacuum blood taking needle commonly used, which is composed of a needle base, a puncture needle tube and a blood taking needle tube fixedly connected to both ends of the needle base, and an outer sealing rubber sleeve hermetically connected to the blood taking needle tube, wherein a tightly fixed outer thread is arranged outside the fixedly connected end of the blood taking needle tube on the needle base, and when in use, the needle base is used in cooperation with a cylindrical needle holder, one end of the needle holder is provided with a blood taking needle tightly fixed inner thread, and the other end of the needle holder is completely open for the insertion of a vacuum blood taking receiving tube. Before blood sampling, the protective sleeve of the blood sampling needle tube is removed, the blood sampling end and the fastening thread on the needle base are exposed, the blood sampling needle is inserted into the fastening end of the needle holder and screwed, then the protective sleeve outside the puncture needle tube is removed, and the combination of the blood sampling needle assembly is completed. When blood is collected, the puncture needle tube penetrates into a blood vessel of a human body, blood return is observed when the needle base is observed, the needle tip of the puncture needle tube enters the blood vessel, then the vacuum blood collection containing tube can be inserted into the open end of the needle holder for blood collection, the blood collection is finished, the blood collection needle is withdrawn from the human body, in order to prevent the blood-carrying puncture needle tube from accidentally injuring people and prevent blood in the needle tube from polluting the environment, the puncture needle tube is required to be sleeved with a protective sleeve which is pulled out before, and the use of the blood collection needle is finished. When the blood taking needle is used, the protective sleeve of the puncture needle tube needs to be sleeved back, so that an operator is easily accidentally injured, and psychological burden is caused to the operator.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the weak point of prior art, and provide an easy operation, safe in utilization's pen type blood taking needle rotates automatic storage device of trip formula.

The rotary trip type automatic storage device for the pen type blood taking needle comprises a blood taking needle puncture component and a storage device component, wherein the blood taking needle puncture component comprises a cylindrical needle holder, a needle holder body and a stop ring, and the storage device component comprises a needle taking device, a stirring rotating sleeve and a storage sleeve; the needle base body is arranged at the semi-closed end of the cylindrical needle holder, a mounting hole of a stop ring rotary swing wing is arranged on the cylinder wall of the end of the cylindrical needle holder body where the needle base body is arranged, a stop groove matched with the stop convex rib on the needle base body is arranged on the mounting hole of the needle base body of the cylindrical needle holder, an axial stop elastic convex clip is arranged on the cylinder wall of the end of the inner cavity of the cylindrical needle holder body close to the mounting hole of the needle base body, the convex clip is protruded towards the inner side of the rotary shell, the top end surface of the convex clip is a stop surface, the pen type blood taking needle is arranged on the needle base body, the outer circumferential surface of the large end of the needle base body for installing the pen type blood taking needle is provided with a stop convex rib extending along the axial direction, the stop convex clip vertical to the stop convex rib is arranged at the end part of the symmetrical stop convex rib far away from the large end of the needle base body, and an annular flange is arranged on the outer circumferential surface of the small end of the needle base body, the end face of the flange close to the large end of the needle base body is perpendicular to the axis, the end face of the flange far away from the large end of the needle base body is a conical surface, one end face of the stop ring is provided with symmetrical fan-shaped rotary swing wings, the rotary swing wings extend outwards from the inner cavity of the stop ring to form a cylindrical surface, the bottom plane of each rotary swing wing is provided with a stop catch which is connected with the inner side of the closing-in of the ring body of the stop ring and extends out of the side edge of the fan shape, the other end of the stop ring is provided with concave-convex teeth matched with the shifting rotary sleeve for use, the stop ring is arranged between the needle base body and the needle holder, the bottom surface of the rotary swing wing of the stop ring is buckled at the mounting hole of the rotary swing wing of the stop ring, meanwhile, the stop catch on the rotary swing wing is also abutted against the stop catch on the needle base body, the stop ring is in abutting sliding fit with the needle holder and the needle base body, and the stop ring can rotate around the axis under the action of external rotating force;

the collecting sleeve is a step-shaped rotary tube body, symmetrically arranged cylindrical pushing nails are arranged at a certain position of the small end tube body of the collecting sleeve away from the end face, an L-shaped chute is formed in the small end wall among the pushing nails, the slot hole is communicated with the inner cavity of the tube body, the tail end of the axial longitudinal slot hole is also communicated with the inner cavity of the large end, and the sliding pin on the needle taking device is accommodated in the circumferential transverse slot hole to stop sliding in the circumferential transverse slot hole;

one end of the needle taking device can be sleeved into one end of the needle seat body, an elastic inner hooking convex card is arranged on the inner wall of the sleeved end of the needle taking device, the elastic inner hooking convex card can be hooked on an annular flange on the small end of the needle seat body when in use, and the other end of the needle taking device is provided with symmetrically arranged cylindrical sliding pins which are vertical to the axis of the needle taking device;

the poking rotating sleeve is a cylindrical body, one end of the periphery of the cylindrical body is provided with an annular flange, the end face of the cylindrical body with the annular flange end is provided with concave-convex teeth matched with the stop ring for use, the peripheral surface of the poking rotating sleeve is also provided with an oblique sliding chute forming a certain angle with the axis of the poking rotating sleeve, and the other end of the poking rotating sleeve is also provided with a longitudinal sliding chute extending along the axial direction of the poking rotating sleeve;

the needle taking device is arranged in an inner cavity of a small end of a containing sleeve of the stepped cylindrical body, symmetrical sliding pins on the needle taking device are positioned in an L-shaped chute on the small end of the containing sleeve to rotate in the L-shaped chute as required, one end of a poking rotating sleeve with a longitudinal opening chute is sleeved in the small end of the containing sleeve, a sliding pin on the needle taking device positioned in the inner cavity of the containing sleeve stretches into the opening longitudinal chute of the poking rotating sleeve, a pushing nail on the outer peripheral surface of the small end of the containing sleeve slides into the oblique chute on the poking rotating sleeve, the poking rotating sleeve is sleeved with the small end of the containing sleeve in a sliding mode, one end of a spring is connected with the needle taking device, and the other end of the spring is arranged on an end cover of the containing sleeve.

The utility model discloses a pen type blood taking needle rotates automatic storage device of formula of breaking away when using, and the needle holder of handheld blood taking needle sub-assembly gets rid of blood taking needle pjncture needle outside of tubes protective sheath, pierces the blood vessel of wanting with the puncture needle tubing, treats blood return back, can insert the vacuum test tube and gather blood. After blood collection is finished, the blood taking needle does not need to be removed from a blood vessel of a patient, one hand continues to hold the blood taking needle assembly, the other hand holds the blood taking needle containing device, the device is provided with a poking rotary sleeve, one end of the poking rotary sleeve is inserted into the inner cavity of the needle holder from the opening of the needle holder, then, the palm surface is used for supporting the end surface of the containing device exposed out of the needle holder, the containing device is pushed into the needle holder continuously by using the palm surface, then, the annular flange on the poking rotary sleeve climbs over the elastic convex card in the inner cavity of the needle holder, the elastic convex card is recovered, the top end surface of the elastic convex card supports the annular flange on the poking rotary sleeve, the poking rotary sleeve cannot retreat and fall off, the convex tooth on the poking rotary sleeve is also inserted into the groove of the stop ring, the tooth crest abuts against the bottom surface of the notch, axial slippage of the poking rotary sleeve relative to the needle holder is limited, the containing device is continuously pushed, the containing sleeve of the containing device can continuously slide inwards, and the needle taking device moves inwards along with the containing sleeve, the inner hooked convex card on the needle taking device gradually approaches the needle seat body, the pushing nail on the containing sleeve drives the stirring rotating sleeve to rotate through the inclined sliding groove on the stirring rotating sleeve, the stirring sleeve drives the stop ring to rotate along with the meshing of the convex teeth, the stop block on the stop ring slides with the stop block on the needle seat body, meanwhile, the stirring rotating sleeve also drives the needle taking device to rotate through the longitudinal sliding groove on the stirring rotating sleeve, the sliding pin on the needle taking device slides along with the transverse sliding groove on the containing sleeve, the containing sleeve continues to push inwards until the pushing pin on the containing sleeve touches the stirring rotating sleeve, the stirring rotating sleeve rotates, the stop block on the stop ring continues sliding with the stop block on the needle seat body until the stop block 3.3 on the needle seat body is separated from the stop block on the stop ring to collide and restrict, at the moment, the inner hooked convex card on the needle taking device climbs the annular flange on the small end of the needle seat body, the needle taking device is hooked with the flange, the sliding pin slides to the tail end in the transverse sliding groove of the containing sleeve along with the shifting and rotating sleeve, the sliding pin loses axial restraint, the needle taking device pulls the needle holder body to slide towards the inner cavity of the containing device under the tensile force action of the containing extension spring, the blood taking needle on the needle holder body is driven to slide towards the containing device, and therefore the blood taking needle is completely pulled into a cavity formed by the needle holder and the containing sleeve, and the needle tube is not exposed.

A plurality of axial sliding guide ribs are arranged on the wall of the cylindrical needle holder close to the inner cavity of the other open end, and guide convex ribs matched with the guide ribs on the needle holder are arranged on the peripheral surface of the containing sleeve.

The open end of the needle holder is provided with a buckle.

The mounting hole of the rotary swing wing of the stop ring arranged at the end part of the cylindrical needle holder is specifically that a ring is connected with the shell of the cylindrical needle holder through a pair of symmetrical connecting lugs, and the ring between the two symmetrical connecting lugs and a gap between the shell form the mounting hole of the rotary swing wing of the stop ring.

The needle holder is of an elastic thin-wall structure.

The containing sleeve is of an elastic thin-wall structure.

To sum up, the utility model discloses compare prior art following advantage:

the utility model discloses a pen type blood taking needle rotates automatic storage device of formula of breaking away has simple structure, convenient operation, safe and reliable, advantage with low costs.

Drawings

Fig. 1 is a schematic structural view of the pen type blood taking needle puncturing assembly of the present invention.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is a schematic structural view of the storage device assembly of the present invention.

Fig. 4 is a sectional view of fig. 3.

FIG. 5 is a schematic structural view of the needle holder.

Fig. 6 is another angle schematic of fig. 5.

Fig. 7 is a cross-sectional view of fig. 5.

Fig. 8 is a schematic view of a needle hub.

Fig. 9 is a schematic elevational view of the needle mount of fig. 8.

Fig. 10 is a schematic view of a snap ring.

Fig. 11 is a schematic view of the receiving sleeve.

Fig. 12 is another angular schematic of fig. 11.

Fig. 13 is a cross-sectional view of fig. 11.

FIG. 14 is a schematic view of a needle extractor.

Fig. 15 is a schematic cross-sectional view of fig. 14.

Figure 16 is a schematic view of a dial sleeve.

Fig. 17 is a schematic view of the storage of the extension spring.

Fig. 18 is a schematic view of a receiving sleeve end cap.

Fig. 19 is a sectional view of fig. 18.

Fig. 20 is a schematic view of a spring retaining pin.

Figure 21 is a schematic view of the lancet assembly process.

Figure 22 is a schematic view of a lancet assembly.

FIG. 23 is a schematic view of the lancet puncturing assembly and the receiving device assembly engaged.

Fig. 24 is a schematic cross-sectional view of fig. 23.

FIG. 25 is a partial cross-sectional schematic view of the needle holder of the FIG. 23 cut-away.

FIG. 26 is a schematic view of the sliding pin on the needle remover sliding in the upper sliding slot of the receiving sleeve.

FIG. 27 is a schematic view of the inner cavity of the lancet receiving and storing device.

Fig. 28 is a partial cross-sectional schematic view of fig. 27.

Fig. 29 is a cross-sectional view of fig. 27.

Detailed Description

The present invention will be described in more detail with reference to the following examples.

Example 1

The rotary trip type automatic storage device for the pen type blood taking needle comprises a blood taking needle puncture component and a storage device component, wherein the blood taking needle puncture component comprises a cylindrical needle holder, a needle holder body and a stop ring, and the storage device component comprises a needle taking device, a stirring rotating sleeve and a storage sleeve; the needle base body is arranged at the semi-closed end of the cylindrical needle holder, a mounting hole of a stop ring rotary swing wing is arranged on the cylinder wall of the end of the cylindrical needle holder body where the needle base body is arranged, a stop groove matched with the stop convex rib on the needle base body is arranged on the mounting hole of the needle base body of the cylindrical needle holder, an axial stop elastic convex clip is arranged on the cylinder wall of the end of the inner cavity of the cylindrical needle holder body close to the mounting hole of the needle base body, the convex clip is protruded towards the inner side of the rotary shell, the top end surface of the convex clip is a stop surface, the pen type blood taking needle is arranged on the needle base body, the outer circumferential surface of the large end of the needle base body for installing the pen type blood taking needle is provided with a stop convex rib extending along the axial direction, the stop convex clip vertical to the stop convex rib is arranged at the end part of the symmetrical stop convex rib far away from the large end of the needle base body, and an annular flange is arranged on the outer circumferential surface of the small end of the needle base body, the end face of the flange close to the large end of the needle base body is perpendicular to the axis, the end face of the flange far away from the large end of the needle base body is a conical surface, one end face of the stop ring is provided with symmetrical fan-shaped rotary swing wings, the rotary swing wings extend outwards from the inner cavity of the stop ring to form a cylindrical surface, the bottom plane of each rotary swing wing is provided with a stop catch which is connected with the inner side of the closing-in of the ring body of the stop ring and extends out of the side edge of the fan shape, the other end of the stop ring is provided with concave-convex teeth matched with the shifting rotary sleeve for use, the stop ring is arranged between the needle base body and the needle holder, the bottom surface of the rotary swing wing of the stop ring is buckled at the mounting hole of the rotary swing wing of the stop ring, meanwhile, the stop catch on the rotary swing wing is also abutted against the stop catch on the needle base body, the stop ring is in abutting sliding fit with the needle holder and the needle base body, and the stop ring can rotate around the axis under the action of external rotating force;

the collecting sleeve is a step-shaped rotary tube body, symmetrically arranged cylindrical pushing nails are arranged at a certain position of the small end tube body of the collecting sleeve away from the end face, an L-shaped chute is formed in the small end wall among the pushing nails, the slot hole is communicated with the inner cavity of the tube body, the tail end of the axial longitudinal slot hole is also communicated with the inner cavity of the large end, and the sliding pin on the needle taking device is accommodated in the circumferential transverse slot hole to stop sliding in the circumferential transverse slot hole;

one end of the needle taking device can be sleeved into one end of the needle seat body, an elastic inner hooking convex card is arranged on the inner wall of the sleeved end of the needle taking device, the elastic inner hooking convex card can be hooked on an annular flange on the small end of the needle seat body when in use, and the other end of the needle taking device is provided with symmetrically arranged cylindrical sliding pins which are vertical to the axis of the needle taking device;

the poking rotating sleeve is a cylindrical body, one end of the periphery of the cylindrical body is provided with an annular flange, the end face of the cylindrical body with the annular flange end is provided with concave-convex teeth matched with the stop ring for use, the peripheral surface of the poking rotating sleeve is also provided with an oblique sliding chute forming a certain angle with the axis of the poking rotating sleeve, and the other end of the poking rotating sleeve is also provided with a longitudinal sliding chute extending along the axial direction of the poking rotating sleeve;

the needle taking device is arranged in an inner cavity of a small end of a storage sleeve of the stepped cylindrical body, symmetrical sliding pins on the needle taking device are positioned in an L-shaped chute on the small end of the storage sleeve and rotate in the L-shaped chute as required, one end of a poking rotating sleeve with a longitudinal opening chute is sleeved in the small end of the storage sleeve, a sliding pin on the needle taking device positioned in the inner cavity of the storage sleeve stretches into the opening longitudinal chute of the poking rotating sleeve, a pushing nail on the outer peripheral surface of the small end of the storage sleeve slides into an oblique chute on the poking rotating sleeve, the poking rotating sleeve is sleeved with the small end of the storage sleeve in a sliding mode, one end of a spring is connected with the needle taking device, and the other end of the spring is arranged on an end cover of the storage sleeve.

The needle holder 2 is as shown in fig. 5, 6 and 7:

it is a cylindrical thin shell revolving body 2.1 made of plastic with certain elasticity. Wherein one end has a ring 2.4 to be connected with the casing through a symmetrical engaging lug 2.5, constitutes half closed end, and ring hole 2.8 is the needle file body mounting hole, and the aperture is greater than the blood taking needle file maximum external diameter, and the inside wall is equipped with a plurality of splines 2.7, and is identical with the last rotation muscle of needle file body, and the other end is one and opens 2.3 completely, supplies the heparin tube business turn over, is equipped with operation attacker 2.2 at the uncovered terminal surface.

2.6 Is a gap formed between the symmetrical connecting lugs 2.5 at the end part of the rotary shell and used for buckling the rotary swing wing on the stop ring 4.

2.9 The elastic convex card is an axial stop elastic convex card, the convex card protrudes towards the inner side of the rotary shell, and the top end surface of the convex card is a stop surface.

2.10 The guide ribs are arranged on the inner side wall of the rotary shell and slide axially, and gaps between the guide ribs and the guide ribs are matched with the convex guide ribs 7.1 on the storage sleeve 7 to slide.

The needle holder body 3 is shown in figures 8 and 9

Is a central through-hole plug made of plastic or rigid material.

3.1 tightening the inner screw thread of the blood taking needle and the needle holder 2

3.2 a plurality of installation rotation-stopping convex ribs are arranged on the outer circumferential wall of the large end of the needle base body,

3.3 is the axial stop catch which is arranged at one end of the symmetrical rotation stopping convex rib far away from the big end surface, and the big end surface of the stop catch is in sliding contact with the stop catch 4.3 on the stop ring 4 when being assembled.

3.4 is an annular flange with a proximal flange end face perpendicular to the axis, a distal flange end face that is conical,

the snap ring 4 is shown in fig. 10

The turning device is a cylindrical ring body, one end of the cylindrical ring body is slightly closed, fan-shaped rotary swing wings 4.2 are symmetrically arranged on the end face of the ring, the rotary swing wings extend out of the convex cylindrical surface from inside to outside, a stop catch 4.3 which is connected with the inner side of the closed ring body and extends out of the fan-shaped side edge is arranged on the bottom plane of each rotary swing wing, and a plurality of rectangular notches 4.1 are arranged at the other end of the ring body and are matched with convex teeth on a shifting rotary sleeve 6.

The housing sleeve 7 is shown in FIGS. 11, 12 and 13

It is a step-shaped thin-wall rotary pipe body made of plastic with certain elasticity.

7.1 is a plurality of guiding convex ribs arranged on the outer circumference of the large-end tube body near the front end, and are matched with 2.10 concave-convex parts of the guiding ribs in the needle holder.

7.2 is a cylindrical pushing nail symmetrically arranged at a certain position of the small-end pipe body away from the end face.

7.3 an L-shaped chute is arranged on the small end wall between the pushing nails 7.2, the slotted hole is communicated with the inner cavity of the tube body, the tail end of the axial longitudinal slotted hole is also communicated with the inner cavity of the large end, and the circumferential transverse slotted hole is used for accommodating a sliding pin 5.1 on the needle extractor 5 and is locked and slid in the sliding pin.

The needle extractor 5 is shown in fig. 14 and 15

The hollow rotary body is a hollow rotary body with a large end and a small end, wherein one end face of the rotary body is opened, an inner cavity is communicated with the outside and is made of certain elastic plastics, and the size of the inner cavity can meet the requirement that the blood sampling end of the blood sampling needle is inserted into the rotary body including a sealing rubber sleeve.

5.3, symmetrical elastic inward-hooking convex cards are arranged on the large end wall;

5.1 is a symmetrical cylindrical sliding pin arranged at the outer periphery step and stopped in the L-shaped part on the containing sleeve during assembly. The pin end is exposed out of the outer peripheral wall of the containing sleeve for a certain distance, and the distance between the two pin ends is similar to the outer peripheral size of the shifting rotary sleeve 6;

5.2, the extension spring is fixedly connected with the annular mounting groove.

The toggle rotary sleeve 6 is shown in figure 16

Is a thin-wall short cylinder sleeve, one end of which is provided with a cylindrical surface flange 6.2, a plurality of convex teeth 6.1 are arranged on the thin-wall short cylinder sleeve, the size of the outer cylindrical surface of the convex teeth is smaller than the size of the inner ring of the inner cavity of the needle holder, and the thin-wall short cylinder sleeve can enter the inner cavity of the needle holder along with the containing sleeve and is matched with the stop sleeve 4. Two oblique sliding grooves 6.2 are distributed on the wall of the barrel sleeve in a circumferential opposite mode, the sliding grooves are communicated with the inner cavity of the barrel sleeve to accommodate a pushing nail 7.2 on the accommodating sleeve to slide in the barrel sleeve, the circumferential angular displacement of the sliding grooves is enough to drive a stop catch on the stop ring and a stop pin on the needle taking device to be separated from respective stop restraint, and meanwhile, the axial displacement of the sliding grooves is enough to extend forwards of the accommodating sleeve to drive the needle taking device 5 to grab the needle seat body. 6.4

The accommodating extension spring 8 is shown in FIG. 17

The spring can be a spiral coiled tension spring or a brace spring, one end of the spring is provided with an annular fixing ring 8.1, the end face of the annular ring is perpendicular to the axis of the tension spring and has a certain distance with the end face of the tension spring, the other end of the spring is coiled with an inward opening, and the middle of the spring is provided with a fixing end 8.2 with a small hole.

The receiving sleeve end cap 9 is shown in fig. 18 and 19

The shell is a hemispherical shell, a step flange 9.1 is arranged at the open end, a tension spring fixing hole 9.2 is arranged at the top of the shell, and a concave buckling step surface 9.3 is arranged at the junction of the fixing hole and the periphery of the top of the shell.

The spring fixing pin 10 is shown in fig. 20

Is a rivet-shaped pin body, and is provided with a fastening flange 10.1 at the small end.

1. Assembly of blood lancet assembly

As shown in fig. 2, 21 and 22, firstly, one end of the needle holder body 3 with the rotation stopping rib 3.2 faces to the opening 2.3 of the needle holder 2, the needle holder body is plugged into the inner cavity of the needle holder and pushed forward all the time, the rotation stopping rib on the needle holder body is adjusted to be aligned with the upper rotation stopping groove 2.7 of the needle holder, the stop block 3.3 faces to the notch 2.6 on the semi-closed end of the needle holder and then pushed inward, one end of the needle holder body with the rotation stopping rib is embedded into the needle holder body mounting hole 2.8 on the needle holder, the rotation stopping rib is also embedded into the upper rotation stopping groove on the needle holder, the large end face of the needle holder body is abutted to the inner side face of the semi-closed end of the needle holder, then, one end of the stop ring 4 with the rotary swing wing 4.2 faces to the opening 2.3 of the needle holder, the rotary swing wing on the stop ring faces to the notch 2.6 on the semi-closed end of the needle holder, and the rotary swing wing also faces to the stop block 3.3 on the needle holder body, the stop ring is pushed into the inner cavity of the needle holder with slight force, the needle holder and the stop ring are both made of certain elastic materials, the upward-rotating swing wing of the stop ring can forcibly slide through the wall of the inner cavity of the needle holder to the gap of the semi-closed end of the needle holder, the upward-rotating swing wing of the stop ring is separated from compression, the two elastically recover, the bottom surface of the upward-rotating swing wing of the stop ring is buckled on the end surface of the gap of the needle holder, and meanwhile, the stop catch on the upward-rotating swing wing is also abutted against the stop catch 3.3 on the needle holder body, so that the stop ring cannot axially fall out of the needle holder, the needle holder body is also axially limited and cannot fall out of the needle holder, the stop ring is in abutting sliding fit with the needle holder and the needle holder, and the stop ring can rotate around the axis of the needle holder under the action of external rotating force. Then, the protective sleeve of the blood taking needle tube on the pen type blood taking needle is removed to expose the blood taking end, the tightly fixed external thread on the protective sleeve is also exposed, then the blood taking end is inserted into the tightly fixed internal thread hole 3.1 on the needle base body, and the blood taking needle is screwed up, so that the combination of the blood taking needle assembly is completed. When blood is to be collected, the puncture needle tube protective sleeve on the blood collection needle is removed, and the blood collection needle can be used.

2. Blood taking needle storage device assembly

As shown in fig. 3 and 4, a spring fixing pin 10 is firstly assembled into an inner hole of a blood taking needle accommodating extension spring 8, the small end of the fixing pin is inserted into a small hole of a spring fixing end 8.2, and then a fixing ring 8.1 at the other end of the spring is sleeved with the small end of a needle taking device 5 and fixedly connected into an extension spring fixing annular mounting groove 5.2 at the small end of the needle taking device. Then, the needle taking device faces the large end opening of the containing sleeve 7, the needle taking device and the spring assembly are shifted into the inner cavity of the containing sleeve, the symmetrical sliding pins 5.1 on the needle taking device are sequentially arranged in the L-shaped sliding groove 7.3 longitudinal groove hole on the small end of the containing sleeve 7 to the bottom end of the groove hole, then the needle taking device is rotated, and the symmetrical sliding pins 5.1 on the needle taking device are shifted into the L-shaped sliding groove 7.3 transverse groove hole on the small end of the containing sleeve 7 to the tail end of the groove hole. Then, will accomodate the sleeve pipe tip and move the 6 one ends that have the vertical spout 6.4 of opening of cover 6 towards stirring, insert in stirring the commentaries on classics cover, install the sliding pin on the needle ware of accomodating in the sleeve pipe simultaneously and move in the same direction as stirring the vertical spout 6.4 of opening of the cover 6 of commentaries on classics, force to accomodate and promote on the sleeve pipe tip and promote in 7.2 slides in stirring the commentaries on classics cover last slant spout 6.3 to make and promote in 7.2 and insert the assembly direction slant spout the nearest end, stir the cover so and restricted and got needle ware circumference free rotation, stir and overlap and accomodate and be a slip between the sleeve pipe tip and cup joint. Then, one end of the spring provided with the spring fixing pin is pulled out of a large port of the accommodating sleeve by a tool, one side of an opening of an end cover 9 of the accommodating sleeve faces the pulled spring end, the small end of the spring fixing pin is inserted into an end cover small hole 9.2, and a buckling flange 10.1 on the fixing pin is buckled and fixed with a buckling stepped surface 9.3 on the end cover. And finally, buckling the stepped flange on the end cover 9 into the large port of the storage sleeve, and adhering and fixing the stepped flange to complete the assembly of the storage sleeve.

The storage device of the embodiment is specifically used as follows:

when needing to collect the blood of a patient, a needle holder of the blood taking needle assembly is held by hand, the puncture needle outer protective sleeve of the blood taking needle 1 is removed, the puncture needle tube is punctured into the needed blood vessel, and after the blood returns, the vacuum blood collecting tube can be inserted to collect the blood. After blood collection is finished, the blood taking needle does not need to be removed from a blood vessel of a patient, one hand continues to hold the blood taking needle assembly, the other hand holds the blood taking needle storage device, one end of the device with the stirring rotating sleeve is inserted into the inner cavity of the needle holder from the opening of the needle holder, the storage device is rotated slightly appropriately, and the guide convex ribs 7.1 on the storage sleeve are made to be arranged in gaps among the guide ribs on the inner wall of the needle holder in a following mode, as shown in fig. 23. Then, the palm surface is utilized to support the end surface of the containing device exposed outside the needle holder, the forefinger and the middle finger respectively buckle the upper buckle of the needle holder, the palm surface is utilized to push the containing device into the needle holder continuously, then the upper cylindrical flange 6.2 of the rotating sleeve is stirred to climb over the elastic convex card 2.9 on the needle holder, the elastic convex card is restored, the top end surface of the elastic convex card supports the upper cylindrical flange 6.2 of the stirring rotating sleeve, so that the stirring rotating sleeve cannot retreat and fall off, at the moment, the convex tooth 6.1 on the stirring rotating sleeve is also inserted into the notch 4.1 on the stop ring 4, the tooth crest is propped against the bottom surface of the notch, and the axial sliding of the stirring rotating sleeve relative to the needle holder is limited, as shown in figures 24 and 25. The containing device is pushed continuously, the containing sleeve of the containing device can slide inwards continuously, the needle taking device 3 moves inwards along with the containing sleeve, the inward hooked convex card 5.3 on the needle taking device is close to the needle seat body gradually, the pushing pin on the containing sleeve pushes the inclined sliding groove 6.3 on the rotating sleeve to force the rotating sleeve 6 to rotate, the shifting sleeve drives the stop ring 4 to rotate along with the rotation through the meshing of the convex teeth, the stop block 4.3 on the stop ring and the stop block card 3.3 on the needle seat body slide, meanwhile, the shifting rotating sleeve also drives the needle taking device to rotate through the longitudinal sliding groove on the shifting sleeve, and the sliding pin on the needle taking device also slides along the transverse sliding groove on the containing sleeve, as shown in fig. 26. The receiving sleeve is further pushed inwards until the pushing pin on the receiving sleeve touches the shifting rotary sleeve, the shifting rotary sleeve rotates, the stop block 4.3 on the stop ring and the stop block 3.3 on the needle base body continuously slide until the stop block 3.3 on the needle base body is separated from the stop block 4.3 on the stop ring to be in collision constraint, at the moment, the inward hooked convex card on the needle taking device climbs over the flange 3.4 on the small end of the needle base body and is hooked with the flange, the sliding pin also slides to the tail end in the upward sliding groove of the receiving sleeve along with the shifting rotary sleeve, the sliding pin loses axial constraint, and under the tensile force of the receiving stretching spring, the needle taking device pulls the needle base body to slide towards the inner cavity of the receiving device to drive the blood taking needle on the needle base body to slide towards the receiving device, so that the blood taking needle is completely pulled into the cavity formed by the needle holder and the receiving sleeve, and the blood taking needle is not exposed, as shown in fig. 27, fig. 28 and fig. 29.

The parts not described in the present embodiment are the same as those in the prior art.

Claims (5)

1. The utility model provides a pen type blood taking needle rotates automatic storage device of formula of breaking away, includes blood taking needle puncture subassembly and storage device subassembly, its characterized in that: the blood taking needle puncture assembly comprises a cylindrical needle holder, a needle holder body and a stop ring, and the storage device assembly comprises a needle taking device, a stirring rotating sleeve and a storage sleeve; the needle base body is arranged at the semi-closed end of the cylindrical needle holder, a mounting hole of a stop ring rotary swing wing is arranged on the cylinder wall of the end of the cylindrical needle holder body where the needle base body is arranged, a stop groove matched with the stop convex rib on the needle base body is arranged on the mounting hole of the needle base body of the cylindrical needle holder, an axial stop elastic convex clip is arranged on the cylinder wall of the end of the inner cavity of the cylindrical needle holder body close to the mounting hole of the needle base body, the convex clip is protruded towards the inner side of the rotary shell, the top end surface of the convex clip is a stop surface, the pen type blood taking needle is arranged on the needle base body, the outer circumferential surface of the large end of the needle base body for installing the pen type blood taking needle is provided with a stop convex rib extending along the axial direction, the stop convex clip vertical to the stop convex rib is arranged at the end part of the symmetrical stop convex rib far away from the large end of the needle base body, and an annular flange is arranged on the outer circumferential surface of the small end of the needle base body, the end face of the flange close to the large end of the needle base body is perpendicular to the axis, the end face of the flange far away from the large end of the needle base body is a conical face, one end face of the stop ring is provided with symmetrical fan-shaped rotary swing wings, the rotary swing wings extend out of the inner cavity of the stop ring to form a convex cylindrical surface, the bottom planes of the rotary swing wings are provided with stop catches connected with the inner side of the closing-up of the ring body of the stop ring and extending out of fan-shaped side edges, the other end of the stop ring is provided with concave-convex teeth matched with the shifting rotary sleeve for use, the stop ring is arranged between the needle base body and the needle holder, the bottom faces of the rotary swing wings of the stop ring are buckled at the mounting holes of the rotary swing wings of the stop ring, meanwhile, the stop catches on the rotary swing wings are also abutted against the stop catches on the needle base body, the stop ring is in abutting sliding fit with the needle holder and the needle base body, and the stop ring can rotate around the axis of the needle holder under the action of external force;

the collecting sleeve is a stepped rotary pipe body, symmetrically arranged cylindrical pushing nails are arranged at a certain position of the small end pipe body of the collecting sleeve away from the end face, an L-shaped sliding groove is formed in the small end wall between the pushing nails, the groove hole is communicated with the inner cavity of the pipe body, the tail end of the axial longitudinal groove hole is also communicated with the inner cavity of the large end, and the circumferential transverse groove hole is used for accommodating a sliding pin on the needle extractor to stop and slide in the axial longitudinal groove hole;

one end of the needle taking device can be sleeved into one end of the needle seat body, an elastic inner hooking convex card is arranged on the inner wall of the sleeved end of the needle taking device, the elastic inner hooking convex card can be hooked on an annular flange on the small end of the needle seat body when in use, and the other end of the needle taking device is provided with symmetrically arranged cylindrical sliding pins which are vertical to the axis of the needle taking device;

the poking rotating sleeve is a cylindrical body, one end of the periphery of the cylindrical body is provided with an annular flange, the end face of the cylindrical body with the annular flange end is provided with concave-convex teeth matched with the stop ring for use, the peripheral surface of the poking rotating sleeve is also provided with an oblique sliding chute forming a certain angle with the axis of the poking rotating sleeve, and the other end of the poking rotating sleeve is also provided with a longitudinal sliding chute extending along the axial direction of the poking rotating sleeve;

the needle taking device is arranged in an inner cavity of a small end of a containing sleeve of the stepped cylindrical body, symmetrical sliding pins on the needle taking device are positioned in an L-shaped chute on the small end of the containing sleeve and rotate in the L-shaped chute as required, one end of a poking rotating sleeve with a longitudinal opening chute is sleeved in the small end of the containing sleeve, a sliding pin on the needle taking device positioned in the inner cavity of the containing sleeve extends into the opening longitudinal chute of the poking rotating sleeve, a pushing nail on the outer peripheral surface of the small end of the containing sleeve slides into an oblique chute on the poking rotating sleeve, the poking rotating sleeve is sleeved with the small end of the containing sleeve in a sliding mode, one end of a spring is connected with the needle taking device, the other end of the spring is arranged on an end cover of the containing sleeve, and the needle holder is of an elastic thin-wall structure.

2. The pen lancet rotary trip type automatic storage device according to claim 1, wherein: a plurality of axial sliding guide ribs are arranged on the inner cavity wall of the cylindrical needle holder close to the other open end, and guide convex ribs matched with the guide ribs on the needle holder are arranged on the peripheral surface of the containing sleeve.

3. The pen lancet rotary trip type automatic storage device according to claim 2, wherein: the open end of the needle holder is provided with a buckle.

4. The pen lancet rotating, trip-type automatic storage device according to claim 3, wherein: the mounting hole of the rotary swing wing of the stop ring arranged at the end part of the cylindrical needle holder is specifically that a ring is connected with the shell of the cylindrical needle holder through a pair of symmetrical connecting lugs, and the ring between the two symmetrical connecting lugs and a gap between the shell form the mounting hole of the rotary swing wing of the stop ring.

5. The pen lancet rotary trip type automatic storage device according to claim 4, wherein: the containing sleeve is of an elastic thin-wall structure.

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