CN106913937B - Needle cylinder and device for realizing quick loading and releasing of needle cylinder - Google Patents
Needle cylinder and device for realizing quick loading and releasing of needle cylinder Download PDFInfo
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- CN106913937B CN106913937B CN201710268907.XA CN201710268907A CN106913937B CN 106913937 B CN106913937 B CN 106913937B CN 201710268907 A CN201710268907 A CN 201710268907A CN 106913937 B CN106913937 B CN 106913937B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3129—Syringe barrels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3129—Syringe barrels
- A61M5/3135—Syringe barrels characterised by constructional features of the proximal end
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3129—Syringe barrels
- A61M2005/3142—Modular constructions, e.g. supplied in separate pieces to be assembled by end-user
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
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- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a device for realizing quick loading and releasing of a needle cylinder. The device comprises an injection head, at least two clamping pins, a pushing ring and a guide sleeve, wherein all the clamping pins are positioned on the same ring, and the clamping pins are arranged on the injection head in a radially telescopic manner through a first elastic structure; one end of the pushing ring extends into the guide sleeve, and a second elastic structure is arranged between the pushing ring and the guide sleeve; the other end of the push ring is opposite to the side face of the clamping pin, the side face of the clamping pin is provided with a convex block assembly, a convex block sliding groove is formed in the position, corresponding to the convex block assembly, of the end face of the push ring, and the convex block assembly extends into the convex block sliding groove; the end face of the push ring facing the clamping pin is also provided with a clamping groove for inserting each clamping part. The device for realizing quick loading and releasing of the needle cylinder, provided by the utility model, is convenient to operate, simple and compact in structure, and stable in connection between the needle cylinder and the device.
Description
Technical Field
The utility model relates to the technical field of injection syringe design, in particular to a device for realizing quick loading and releasing of a syringe.
Background
The syringe is usually used with an injector, and the syringe is filled with liquid and connected with the injector, and the injector pushes the liquid in the syringe to realize injection.
Existing power injectors have a problem with the inconvenience of use in designing for loading and releasing the syringe, which may affect the manner in which the syringe is mounted to and/or held within the power injector, which design inconvenience may complicate the manner in which a user (such as a medical provider) performs loading and release.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a needle cylinder, wherein a limiting flange and a clamping flange are arranged on the outer side wall of the connecting end of the needle cylinder, the clamping flange is close to the tail end of the connecting end of the needle cylinder, and the clamping flange comprises at least two clamping parts which are arranged in the same ring.
Preferably, the side surface of the clamping part, which faces away from the limiting flange, is an inclined surface.
Preferably, two ends of the clamping part, which are back to one side of the limiting flange, are provided with first chamfers.
The utility model provides a device for realizing quick loading and releasing of a needle cylinder, which is used for realizing quick loading and releasing of the needle cylinder piece;
the device comprises an injection head, at least two clamping pins, a pushing ring and a guide sleeve, wherein all the clamping pins are positioned on the same ring, and the clamping pins are arranged on the injection head in a radially telescopic manner through a first elastic structure; one end of the pushing ring extends into the guide sleeve, and a second elastic structure is arranged between the pushing ring and the guide sleeve; the other end of the pushing ring is opposite to the side face of the bayonet lock, a convex block assembly is arranged on the side face of the bayonet lock, a convex block sliding groove is formed in the end face of the other end of the pushing ring at a position corresponding to the convex block assembly, the convex block assembly extends into the convex block sliding groove, the pushing ring rotates relative to the bayonet lock, and the convex block assembly drives the bayonet lock to move radially in the sliding process along the convex block sliding groove; the end face, facing the clamping pin, of the push ring is also provided with a clamping groove for inserting each clamping part;
when loading, the needle cylinder is inserted into the injection head, the clamping part pushes the clamping pin open, and the clamping pin moves outwards in the radial direction and acts on the first elastic structure; after the clamping flange passes through the clamping pin, the clamping pin is reset and pressed on the outer side wall of the needle cylinder under the action of the first elastic structure; the side surface of the clamping flange is pressed on the side surface of the clamping pin, the side surface of the limiting flange is pressed on the outer side surface of the injection head, and the needle cylinder is axially positioned; and each clamping part of the clamping flange extends into each clamping groove respectively;
when the needle cylinder is released, the needle cylinder is rotated, the pushing ring is driven to rotate through the clamping part positioned in the clamping groove, and the pushing ring rotates and acts on the second elastic structure; the push ring rotates, the lug component moves in the lug sliding groove to drive the clamping pins to radially expand, the clamping pins are separated from the clamping flange, and the needle cylinder is axially pulled out; after the syringe is released, the push ring rotates and resets under the action of the second elastic structure.
Preferably, the injection head is provided with an insertion hole for inserting the needle cylinder, and the insertion hole is coaxially arranged with the ring where the bayonet lock is located, the push ring and the guide sleeve; and loading grooves are respectively arranged at the positions, corresponding to the clamping pins, on the edge of the jack, and the clamping part enters the injection head through the loading grooves.
Preferably, the two ends of the clamping part are provided with first chamfers, and the two ends of the loading groove are provided with second chamfers matched with the first chamfers.
Preferably, one side surface of the clamping part facing the injection head is a first inclined surface, and the end part of the clamping pin is provided with a second inclined surface matched with the first inclined surface.
Preferably, a bayonet lock sliding groove is formed in the injection head, each bayonet lock corresponds to one bayonet lock sliding groove, the bayonet lock is installed in the bayonet lock sliding groove, one end of the bayonet lock extends into the bayonet lock sliding groove, the first elastic structure is arranged between the bayonet lock and the bayonet lock sliding groove, and the bayonet lock moves along the bayonet lock sliding groove in the radial direction.
Preferably, the bump assembly comprises a bearing protruding shaft arranged on the side surface of the bayonet and a bearing sleeved on the bearing protruding shaft.
Preferably, the bump sliding grooves are circumferentially arranged, and are gradually deviated from the circle center from the initial end to the tail end.
Preferably, one end of the push ring extending into the guide sleeve is provided with a limiting boss, a guide sleeve limiting groove is formed in the guide sleeve, the limiting boss extends into the guide sleeve limiting groove, the push ring rotates relative to the guide sleeve, and the limiting boss slides along the guide sleeve limiting groove and is used for limiting the rotating angle range of the push ring.
Preferably, the second elastic structure is a torsion spring, the torsion spring is sleeved on the outer ring of the push ring, one end of the torsion spring is fixed on the push ring, and the other end of the torsion spring is fixed on the guide sleeve.
Preferably, the clamping flange comprises two clamping parts which are circumferentially symmetrically arranged, and the injection head is provided with two clamping pins which are circumferentially symmetrically arranged.
Preferably, the injection head is further provided with two stop pins, and the stop pins and the bayonet locks are arranged in the same ring and are arranged between the adjacent bayonet locks; a stop pin sliding groove is formed in the injection head, one end of the stop pin extends into the stop pin sliding groove, a third elastic structure is arranged between the stop pin sliding groove and the stop pin sliding groove, and the other end of the stop pin extends out of the stop pin sliding groove;
in the release process of the needle cylinder, after the bayonet lock is opened, the needle cylinder moves outwards in the axial direction, the clamping part pushes the two stop pins to be opened, the needle cylinder is separated from the injection head, and the stop pins are reset under the action of the third elastic structure.
Preferably, a release groove is further formed in the edge of the insertion hole in the injection head at a position corresponding to the stop pin, and in the release process, the clamping portion stretches the stop pin and then slides out of the injection head along the release groove.
Preferably, the clamping flange comprises four clamping portions, the four clamping portions are axially and uniformly distributed on the needle cylinder, two clamping pins are arranged on the injection head, and the two clamping pins are opposite to two clamping portions which are oppositely arranged.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following advantages and positive effects:
according to the device for realizing quick loading and releasing of the needle cylinder, the injection needle cylinder with a special structure can be quickly loaded on the device and quickly taken down only by rotating the needle cylinder, so that the device is convenient to operate and simple and compact in structure; and the connection between the needle cylinder and the device is stable and is not easy to shake, thereby realizing the stable connection between the needle cylinder and the injector.
Drawings
The above and other features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view showing the construction of a syringe cylinder in embodiment 1 of the present invention;
figure 2 is a disassembled schematic view of the device for realizing the quick loading and releasing of the needle cylinder provided by the embodiment 1 of the utility model;
FIG. 3 is a schematic structural diagram of an apparatus for implementing quick loading and release of a syringe according to embodiment 1 of the present invention;
FIG. 4 is a schematic view showing the loading of the grip part from the loading slot in the syringe loading according to embodiment 1;
FIG. 5 is a schematic view showing the inclined surface of the grip portion contacting the inclined surfaces of the chuck pins and pushing up the two chuck pins in example 1;
FIG. 6 is a schematic view showing the needle cartridge of embodiment 1 after completion of loading;
FIG. 7 is a schematic view showing the back structure of the injection head, the latch and the stopper pin in example 1;
FIG. 8 is a schematic view showing the positional relationship of the locking pin, the bearing and the drive ring, the relative positional relationship of the bearing and the slide groove on the drive ring, and the relative positional relationship of the locking pin and the slide groove on the drive ring, before the loading of the cylinder in embodiment 1;
fig. 9 is a schematic view showing the position states of two bearings, a push ring and the relative position relationship between the two bearings and two sliding grooves on the push ring when two clamping parts push two clamping pins to the maximum state in the loading process of the syringe in embodiment 1;
FIG. 10 is a diagram showing the position of the two bearings and the push ring and the relative position relationship between the two bearings and the sliding grooves at the two ends of the push ring after the loading of the syringe in embodiment 1 is completed;
FIG. 11 is a schematic view showing the positions of the needle cylinder, the two locking pins and the two locking pins after the loading of the needle cylinder in embodiment 1 is completed;
FIG. 12 is a schematic view showing the position of the cylinder, the two bearings, the two pins, and the relative positions of the two bearings and the two sliding grooves at the two ends of the push ring, when the cylinder is released in embodiment 1, after the cylinder has rotated 90 degrees counterclockwise;
FIG. 13 is a schematic view showing the relative positional relationship between the two locking pins and the cylinder when the cylinder is released in embodiment 1 and rotated counterclockwise by 90 °;
FIG. 14 is a schematic view showing that the gripping parts contact the inclined surfaces of the knock pins and push the knock pins open when the cylinder is released in accordance with embodiment 1;
FIG. 15 is a schematic view showing the installation of the torsion spring on the push ring and the guide bush in embodiment 1;
fig. 16 is a schematic view of the initial positions of two limit bosses on the push ring in two limit grooves on the guide sleeve in embodiment 1;
fig. 17 is a schematic view showing the positions of two limiting bosses on the push ring in two limiting grooves on the guide sleeve after the push ring rotates 90 ° in embodiment 1;
FIG. 18 is a schematic view showing the withdrawal of the two grippers of the cylinder along the two release slots of the injection head in accordance with example 1;
FIG. 19 is a schematic view showing the syringe in example 1 in which the two gripping portions are retracted along the two release grooves of the injection head and the two stopper pins prevent the two gripping flanges from being inserted further;
FIG. 20 is a schematic view showing a structure of a cylinder in embodiment 2;
FIG. 21 is a schematic view showing the positions of four gripping portions of the cylinder in embodiment 2;
FIG. 22 is a schematic view showing the positions of four gripping flanges and four loading/unloading slots on the loading head when loading and unloading the cylinder in accordance with example 2;
FIG. 23 is a back view of the injection head in embodiment 2;
FIG. 24 is a schematic view showing the positions of four gripping portions of the cylinder and the gripping grooves of the push ring in example 2.
Detailed Description
The present invention will be described in more detail below with reference to the accompanying drawings, which illustrate embodiments of the utility model. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.
It should be noted that all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
The utility model provides a device for realizing quick loading and releasing of the syringe, which is arranged on an injector so as to realize quick loading and releasing between the syringe and the injector or other devices.
Wherein, be provided with spacing flange and centre gripping flange on the lateral wall of cylinder link, the tail end that the centre gripping flange is close to the cylinder link, and the centre gripping flange is including at least two clamping parts with the ring setting.
The device for realizing the quick loading and releasing of the needle cylinder comprises an injection head, at least two clamping pins, a pushing ring and a guide sleeve, wherein the clamping pins are positioned on the same ring, and the clamping pins 5 are radially and telescopically arranged on the injection head through a first elastic structure; one end of the pushing ring extends into the guide sleeve, and a second elastic structure is arranged between the pushing ring and the guide sleeve; the other end of the pushing ring is opposite to the side face of the bayonet lock, a convex block assembly is arranged on the side face of the bayonet lock, a convex block sliding groove is formed in the end face of the other end of the pushing ring at a position corresponding to the convex block assembly, the convex block assembly extends into the convex block sliding groove, the pushing ring rotates relative to the bayonet lock, and the convex block assembly drives the bayonet lock to move radially in the sliding process along the convex block sliding groove; the end face of the pushing ring facing the bayonet lock is also provided with a clamping groove for inserting each clamping part;
when the needle cylinder 1 is loaded, the needle cylinder is inserted into the injection head, the clamping part pushes open the clamping pin, and the clamping pin moves outwards in the radial direction and acts on the first elastic structure; after the clamping flange passes through the clamping pin, the clamping pin is reset and pressed on the outer side wall of the needle cylinder under the action of the first elastic structure; the side surface of the clamping flange is pressed on the side surface of the clamping pin, the side surface of the limiting flange is pressed on the outer side surface of the injection head, and the needle cylinder is axially positioned; and each clamping part of the clamping flange extends into each clamping groove respectively;
when the needle cylinder 1 is released, the needle cylinder is rotated, the pushing ring is driven to rotate through the clamping part positioned in the clamping groove, and the pushing ring rotates and acts on the second elastic structure; the push ring rotates, the lug component moves in the lug sliding groove to drive the clamping pin to radially open, the clamping pin is separated from the clamping flange, and the needle cylinder is axially pulled out; after the syringe is released, the push ring is rotated and reset under the action of the second elastic structure.
According to the device for realizing quick loading and releasing of the needle cylinder, the needle cylinder provided with the limiting flange and the clamping flange can be quickly loaded on the device and quickly taken down only by rotating the needle cylinder, so that the device is convenient to operate and simple and compact in structure; and the connection between the needle cylinder and the device is stable and is not easy to shake, thereby realizing the stable connection between the needle cylinder and the injector.
The following further describes specific embodiments, specifically:
example 1
Referring to fig. 1-19, the present embodiment provides a means for achieving a syringe quick-action and release.
In this embodiment, the clamping flange includes two clamping portions 100, and the two clamping portions 100 are circumferentially and symmetrically disposed on the outer side wall of the needle cylinder 1; two clamping pins 5 which are symmetrically arranged in the circumferential direction are arranged in the matched injection head. Of course, in other embodiments, the clamping portion 100 may be provided with three or four or five, etc., and is not limited herein.
In this embodiment, an insertion hole is arranged at one end of the injection head 2 connected with the injection tube 1 for inserting the needle tube into the injection head 1, and the insertion hole is coaxially arranged with the ring where the bayonet lock is arranged, the push ring and the guide sleeve; the bayonet 5 is directly arranged in the jack, and the pushing ring 8 and the guide sleeve 11 are sequentially arranged at the other end of the injection head 2 and are coaxially communicated with the jack.
Referring to fig. 3, a loading slot 105 is respectively arranged on the edge of the inner side wall of the jack of the injection head 2 at the position corresponding to the bayonet, and the two loading slots 105 are circumferentially and symmetrically arranged; when the cylinder 1 is inserted into the injection head 2, the grip 100 on the outer sidewall of the cylinder 1 is inserted along the loading slot 105, and the loading slot 105 is provided to play a good role in guiding, thereby allowing the injection head to be easily inserted into the injection head 2.
Further, two ends of the clamping part 100 are provided with first chamfers 102, two ends of the loading groove 105 are also provided with second chamfers 106 matched with the first chamfers 102, and the first chamfers 102 are matched with the second chamfers 106, so that the clamping part 100 can be conveniently inserted into the loading groove 105; in addition, an outward-facing side edge of the loading slot 105 is also provided with a chamfer so that the further edge clamping portion 100 is quickly inserted into the loading slot 105.
Referring to fig. 7, the two chucking pins 5 are respectively disposed in the two loading slots 105; specifically, a bayonet sliding groove 115 is arranged in the loading groove 105, one end of the bayonet 5 extends into the bayonet sliding groove 115, a first elastic structure 6 is arranged between the bayonet 5 and the bayonet sliding groove 115, the other end of the bayonet 5 extends out of the loading groove 105, and meanwhile, the inner side face of the bayonet 5 is fixed on the injection head 2 through a baffle ring 8; after clamping portion 100 is extended into injection head 2 under the guidance of loading channel 105, clamping portion 100 presses on bayonets 5 and continues to apply force, clamping portion 100 spreading apart both bayonets 5 so that bayonets 5 press against first resilient structure 6 and move radially outward along bayonet channels 105; wherein the bayonet lock slide 11 is arranged on the one hand to prevent the bayonet lock 5 and on the other hand to define the sliding direction of the bayonet lock.
Further, the first elastic structure 6 is implemented by a spring, but may be a spring plate or the like in other embodiments, which is not limited herein.
Furthermore, the side of the clamping part 100 facing away from the limiting flange 103 (i.e. the side facing the injection head 2 during loading) is a first inclined surface 101, and the end of the bayonet 5 (i.e. the side facing the clamping part 100 during loading) is provided with a second inclined surface 111 matching with the first inclined surface 10; according to the clamping device, the two clamping pins 5 are smoothly opened through the arrangement of the first inclined surface 101 and the second inclined surface 111, so that the clamping part 100 can conveniently penetrate through the clamping pins 5.
In this embodiment, the bayonet 5 is directly disposed in the loading slot 105 of the insertion hole, so that the structural design is compact, but in other embodiments, the bayonet may not be disposed in the loading slot 105, as long as the position of the loading slot is opposite to the position of the bayonet 5, that is, the clamping portion is ensured to contact with the bayonet 5 under the guiding action of the loading slot and to expand the bayonet, and no limitation is made here.
In this embodiment, the push ring 9 is coaxially disposed in the guide sleeve 11, the guide sleeve 11 is connected to the other end of the injection head 2, and the connection may be realized by means of screws or the like, which is not limited herein; the lug assembly arranged on the side surface of the bayonet 5 penetrates through the baffle ring 8 and then extends into the lug sliding groove 119 on the end surface of the pushing ring 9 to be matched.
Further, referring to fig. 6, a clamping groove 113 is formed in the end surface of the pushing ring 9 facing the injection head 2, the clamping groove 113, the loading groove 105 and the locking pin 5 are located on the same straight line, and the size and shape of the clamping groove 113 are matched with those of the clamping portion 100, so that the clamping portion 100 passes through the locking pin 5, is loaded and then extends into the clamping groove 113, and when the syringe rotates, the pushing ring 9 can be driven to rotate together.
Further, referring to fig. 7, the bump assembly includes a bearing protruding shaft 112 disposed on the side of the bayonet 5 and a bearing 7 sleeved on the bearing protruding shaft 112; the arrangement of the bearing 7 facilitates the lug assembly to slide in the lug sliding groove 119, reduces the friction resistance and quickly releases the needle cylinder. Of course, the structure of the bump assembly in other embodiments is not limited thereto, and the bump assembly may also be implemented by a roller without limitation.
Further, referring to fig. 8 to 10, the bump sliding groove 119 is circumferentially arranged, and from the initial end to the tail end, the bump sliding groove is gradually arranged to deviate from the center of the circle, that is, the inner side edge of the bump sliding groove 119 gradually approaches to the outside so that the width gradually decreases; according to the utility model, through the structural design of the lug sliding groove, when the pushing ring 9 rotates relative to the bayonet 5, the lug sliding groove 119 moves relative to the lug assembly, so that the inner side wall of the lug lake groove gradually pushes the lug assembly radially outwards, and the lug assembly drives the bayonet to move radially outwards.
In this embodiment, referring to fig. 15, 16, and 17, a limiting boss 124 is disposed at one end of the push ring 9 extending into the guide sleeve 11, a guide sleeve limiting groove 125 is disposed in the guide sleeve 11, the limiting boss 124 extends into the guide sleeve limiting groove 125, the push ring 9 rotates relative to the guide sleeve, and the limiting boss 124 slides along the guide sleeve limiting groove 125 to limit the rotation angle range of the push ring. In this embodiment, since only two clamping portions 100 are provided, the push ring only needs to rotate 90 degrees, and therefore, in this application, the guide sleeve limiting groove 125 is set to occupy one fourth of the whole ring, so as to limit the rotation angle of the push ring to 90 degrees; of course, in other embodiments, if the number of the clamping portions is changed, the rotation angle is also changed accordingly, and the number is not limited herein.
In this embodiment, referring to fig. 15, the second elastic structure 10 is a torsion spring, which is sleeved on the outer ring of the push ring 9, and one end of the torsion spring is fixed to the push ring 9, and the other end is fixed to the guide sleeve 11. Specifically, the push ring 9 is provided with a torsion spring insertion hole 121, and one leg 123 of the torsion spring is connected to the torsion spring insertion hole 121 to be fixed; another torsion spring insertion hole 122 is formed in the inner side wall of the guide sleeve 11, and another leg of the torsion spring is connected to the torsion spring insertion hole 122 to be fixed. When the push ring 9 rotates relative to the guide sleeve 11, the torsion spring deforms, so that a resilience force for resetting the push ring 9 is generated. Of course, in other embodiments, the second elastic structure 10 may also be implemented by a spring sheet, and the like, which is not limited herein.
In this embodiment, two release slots 107 are further provided in the receptacle of the injector head 2, and the release slots 107 are used for withdrawing the two grippers 100 from the release slots 107 when the syringe is released; the two release grooves 107 are circumferentially and symmetrically arranged, and the release grooves 107 and the loading groove 105 are arranged at intervals and are positioned on the same ring;
in this embodiment, the two release grooves 107 are provided with a stopper pin 3, respectively, and the present invention prevents the holder from protruding into the release groove 107 during the syringe loading process by the stopper pin 3, thereby preventing an operational error.
Specifically, referring to fig. 7, a stop pin sliding groove 118 is disposed in the release groove 107, one end of the stop pin 3 extends into the stop pin sliding groove 118, a third elastic structure 4 is disposed between the stop pin sliding groove 118 and the stop pin sliding groove, and the other end extends out of the stop pin sliding groove 118. Furthermore, one end of the stop pin 3 extending out of the stop pin sliding groove 118 is inclined toward one side of the push ring, i.e. a stop pin inclined plane 116 is formed; the inclined surface 116 of the stop pin is provided to facilitate the smooth spreading of the stop pin 3 when the clamping portion 100 is withdrawn.
During loading, the clamping portion cannot be inserted into the release slot 107 due to the setting of the stopper pin 3, and can be inserted only from the loading slot 105; in the releasing process, the needle cylinder rotates by 90 degrees, the clamping part on the needle cylinder is just opposite to the releasing groove 107, the needle cylinder is axially pulled out, the needle cylinder presses the inclined plane 116 of the stop pin and pushes the two stop pins 3 to the left and the right, so that the clamping part is smoothly withdrawn; the two stop pins 3 move outwards in the radial direction and compress or stretch the third elastic structure 4, the third elastic structure 4 generates elastic restoring force, and the stop pins 3 are reset under the action of the third elastic structure after releasing is completed.
In the present embodiment, the number of the bayonet 5, the catch pin 3, the release groove, and the loading groove is equal to the number of the clamping portions, and the number of the clamping portions is matched with each other, which is not limited herein.
The working principle of the device for realizing the quick action and release of the needle cylinder provided by the embodiment is further explained as follows:
1. loading procedure
Referring to fig. 4-11, the syringe 1 is inserted into the injection head 1, and the clip members 100 are inserted along the respective loading slots 105 under the guiding action of the loading slots 105 (wherein, if the upper clip member 100 of the syringe is inserted into the release slot 107, the outer side 108 of the stopper pin 3 contacts the clip members and prevents the clip members 100 from being inserted further, thus preventing erroneous operation), and the end surface 104 of the connecting end of the syringe does not contact the stopper pin 3; the clamping part 100 firstly contacts the bayonet 5, the first inclined plane 101 of the clamping part 100 contacts the second inclined plane 111 of the bayonet 5 to apply force to the syringe in the axial direction, the clamping part 100 pushes the two bayonets 5 to expand radially, and simultaneously the bayonet compresses the first elastic structure 6 to generate certain restoring elastic force;
when the side surface of the limiting flange 103 facing one side of the clamping flange contacts with the outer end surface of the injection head, the needle cylinder 1 cannot be inserted continuously, the clamping part 100 is also separated from the bayonet 5, and the side surface 109 of the clamping part facing one side of the limiting flange 103 contacts with the side surface 114 of the bayonet 5, so that the axial limiting of the needle cylinder is realized; meanwhile, after the clamping part 100 is separated from the bayonet 5, the bayonet 5 is reset and pressed on the outer side wall 110 of the needle cylinder under the action of the resilience force of the first elastic structure, so that the needle cylinder 1 is clamped, the stability of the loaded needle cylinder is ensured, the loaded needle cylinder is prevented from shaking, and the loading is finished;
at this time, each of the holding portions 100 is located in the corresponding holding groove 113 of the push ring.
2. Release Process
Referring to fig. 12-19, the needle cylinder is rotated counterclockwise, the needle cylinder is clamped in the clamping groove 113 through the clamping part, so as to drive the push ring 9 to rotate, and the push ring 9 rotates 90 degrees under the cooperation of the limiting lug 124 and the limiting groove 125 of the guide sleeve due to the rotation of the push ring 9 relative to the guide sleeve; the pushing ring 9 rotates to drive the second elastic structure 10 to twist to generate a restoring torque force, the pushing ring 9 enables the bump component to move radially outwards through the special shapes of the bump component and the bump sliding groove in the rotating process, so that the clamping pins 5 are pushed to move radially outwards, the two clamping pins 5 are opened, the outer side wall 110 of the needle cylinder is not held tightly, at the moment, the clamping part 100 rotates to the releasing groove 107, and the needle cylinder easily moves outwards axially under the guiding action of the chamfer 117 on the releasing groove 107 and the chamfer 102 on the clamping part 100;
in the process of moving the needle cylinder outwards in the axial direction, the clamping part 100 is in contact with the stop pin inclined plane 116 of the stop pin 3, so that the two stop pins 3 are pushed to move outwards and expand in the radial direction, the third elastic structure 4 is compressed in the process of moving the stop pin 3 outwards to generate restoring elasticity, and the needle cylinder is pushed to be released quickly under the action of the restoring elasticity until the needle cylinder is separated from the injection head 2, so that the whole releasing process is completed;
after the syringe is released, the stop pin 3 is reset under the action of the third elastic structure 4, the push ring 9 is reset under the action of the second elastic structure 10, and the bayonet 5 is reset under the action of the first elastic structure 6.
Example 2
Referring to fig. 20 to 24, the present embodiment provides a means for achieving the quick-release of the syringe and the release, and is a modification made on the basis of embodiment 1.
Specifically, in this embodiment, the outer side wall of the syringe is provided with four clamping portions 100 arranged in the same ring, the four clamping portions 100 are circumferentially and uniformly distributed, and one ring of insertion holes of the matched injection head 1 is axially and uniformly distributed with four loading grooves 105, which can be used as either loading grooves or release grooves; wherein, a bayonet 5 is respectively arranged in two symmetrical loading grooves 105, and stop pins are not arranged in the other two piled loading grooves 105. And in addition, four clamping grooves 113 are uniformly distributed on the pushing ring 9 in the circumferential direction, and the rest loading grooves 105 in each clamping groove 113 are in one-to-one correspondence.
Other structural forms of the device for realizing quick device and release of syringe provided by the embodiment can refer to the description of the embodiment 1, and are not described herein.
The working principle of the device for realizing the quick action and release of the needle cylinder provided by the embodiment is further explained as follows:
1. loading procedure
As shown in fig. 22, the four holding portions 100 are inserted along four corresponding loading slots 105 of the injection head 2, respectively; wherein, the two opposite clamping parts 100 contact the two bayonet locks 5 and push the two bayonet locks 5 to radially expand, and in the process, the bayonet locks 5 compress the first elastic structure 6 and enable the first elastic structure to generate restoring elasticity;
when the limiting flange 103 contacts the injection head 2, the needle cylinder 1 cannot be inserted continuously, the two opposite clamping parts 100 are separated from the bayonet 5, and the side surfaces of the clamping parts 100 are contacted with the side surfaces of the stop pins to realize axial positioning; the other two clamping portions 100 pass through the other two loading slots 105 directly in the process; meanwhile, after the bayonet 5 is separated from the clamping part 100, under the action of the elastic restoring force of the first elastic structure 6, the bayonet 5 is reset to tightly hold the outer side wall of the needle cylinder, and the loading of the needle cylinder is finished;
at this time, the four holding portions 100 are correspondingly inserted into the four holding grooves 113 of the pushing ring 9.
2. Release Process
Rotating the syringe 1, and because the clamping part 100 on the syringe 1 is in the clamping groove 113 on the pushing ring 9, the pushing ring 9 rotates 90 degrees along with the syringe 1 anticlockwise, and the second elastic structure generates a restoring torque in the rotating process of the pushing ring 9; the pushing ring rotates to be matched with the bump assembly through the bump sliding groove, so that the two clamping pins are pushed to move outwards in the radial direction and open, and the clamping pins 5 are separated from the clamping part 100; at this time, the four clamping flanges 100 still correspond to the four loading slots 105 on the injection head end 2, and the syringe 1 can be pulled out to complete the release;
after the needle cylinder 1 is pulled out, the pushing ring 9 is reset under the action of the restoring torque of the second elastic structure, and the bayonet 5 is reset under the action of the first elastic structure 6.
It should be noted that, the four clamping portions 100 on the syringe 1 correspond to the four loading slots on the injection head 2 and the four clamping slots 113 on the push ring 9, so that there is no misoperation, and therefore, the normal operation of the device is not affected when the stop pin is eliminated, and meanwhile, the whole device has a more compact structure and is more convenient to operate.
Example 3
The utility model also provides the needle cylinder, wherein the outer side wall of the connecting end of the needle cylinder is provided with a limiting flange and a clamping flange, the clamping flange is close to the tail end of the connecting end of the needle cylinder, and the clamping flange comprises at least two clamping parts which are arranged in the same ring.
The syringe is connected with the injector or other devices through a quick loading and releasing device, the quick loading and releasing device is directly arranged on the injector, and the syringe is loaded or released with the device through a limiting flange and a clamping flange.
The device comprises an injection head, at least two clamping pins, a pushing ring and a guide sleeve, wherein all the clamping pins are positioned on the same ring, and the clamping pins are arranged on the injection head in a radially telescopic manner through a first elastic structure; one end of the pushing ring extends into the guide sleeve, and a second elastic structure is arranged between the pushing ring and the guide sleeve; the other end of the pushing ring is opposite to the side face of the bayonet lock, a convex block assembly is arranged on the side face of the bayonet lock, a convex block sliding groove is formed in the end face of the other end of the pushing ring at a position corresponding to the convex block assembly, the convex block assembly extends into the convex block sliding groove, the pushing ring rotates relative to the bayonet lock, and the convex block assembly drives the bayonet lock to move radially in the sliding process along the convex block sliding groove; the end face of the pushing ring facing the clamping pin is also provided with a clamping groove for inserting each clamping part;
during loading, the needle cylinder is inserted into the injection head, the clamping part pushes the clamping pins open, and the clamping pins move outwards in the radial direction and act on the first elastic structure; after the clamping flange passes through the clamping pin, the clamping pin is reset and pressed on the outer side wall of the needle cylinder under the action of the first elastic structure; the side surface of the clamping flange is pressed on the side surface of the clamping pin, the side surface of the limiting flange is pressed on the outer side surface of the injection head, and the needle cylinder is axially positioned; and each clamping part of the clamping flange extends into each clamping groove respectively;
when the needle cylinder is released, the needle cylinder is rotated, the pushing ring is driven to rotate through the clamping part in the clamping groove, and the pushing ring rotates and acts on the second elastic structure; the push ring rotates, the lug component moves in the lug sliding groove to drive the clamping pins to radially expand, the clamping pins are separated from the clamping flange, and the needle cylinder is axially pulled out; after the syringe is released, the push ring is rotated and reset under the action of the second elastic structure.
In this embodiment, the side of the clamping portion facing away from the limiting flange is an inclined surface.
In this embodiment, the both ends of clamping part one side dorsad spacing flange are equipped with first chamfer.
In this embodiment, the clamping flange may include two clamping portions or four clamping portions, which is not limited herein.
It will be appreciated by those skilled in the art that the utility model can be embodied in many other specific forms without departing from the spirit or scope thereof. Although embodiments of the present invention have been described, it is to be understood that the present invention should not be limited to those precise embodiments, and that various changes and modifications can be effected therein by one skilled in the art without departing from the scope or spirit of the utility model as defined by the appended claims.
Claims (11)
1. A device for realizing quick loading and releasing of a needle cylinder is characterized by being used for realizing quick loading and releasing of the needle cylinder, wherein a limiting flange and a clamping flange are arranged on the outer side wall of a connecting end of the needle cylinder, the clamping flange is close to the tail end of the connecting end of the needle cylinder, and the clamping flange comprises at least two clamping parts which are arranged in the same ring;
the device comprises an injection head, at least two clamping pins, a pushing ring and a guide sleeve, wherein all the clamping pins are positioned on the same ring, and the clamping pins are arranged on the injection head in a radially telescopic manner through a first elastic structure; one end of the pushing ring extends into the guide sleeve, and a second elastic structure is arranged between the pushing ring and the guide sleeve; the other end of the pushing ring is opposite to the side face of the bayonet lock, a convex block assembly is arranged on the side face of the bayonet lock, a convex block sliding groove is formed in the end face of the other end of the pushing ring at a position corresponding to the convex block assembly, the convex block assembly extends into the convex block sliding groove, the pushing ring rotates relative to the bayonet lock, and the convex block assembly drives the bayonet lock to move radially in the sliding process along the convex block sliding groove; the end face, facing the clamping pin, of the push ring is also provided with a clamping groove for inserting each clamping part;
the convex block component comprises a bearing convex shaft arranged on the side surface of the bayonet lock and a bearing sleeved on the bearing convex shaft;
the bump sliding grooves are circumferentially arranged, and are gradually deviated from the circle center from the initial end to the tail end;
during loading, the needle cylinder is inserted into the injection head, the clamping part pushes the clamping pins open, and the clamping pins move outwards in the radial direction and act on the first elastic structure; after the clamping flange penetrates through the clamping pin, the clamping pin resets and is pressed on the outer side wall of the needle cylinder under the action of the first elastic structure; the side surface of the clamping flange is pressed on the side surface of the clamping pin, the side surface of the limiting flange is pressed on the outer side surface of the injection head, and the needle cylinder is axially positioned; and each clamping part of the clamping flange extends into each clamping groove respectively;
when the needle cylinder is released, the needle cylinder is rotated, the pushing ring is driven to rotate through the clamping part in the clamping groove, and the pushing ring rotates and acts on the second elastic structure; the push ring rotates, the lug component moves in the lug sliding groove to drive the clamping pins to radially expand, the clamping pins are separated from the clamping flange, and the needle cylinder is axially pulled out; after the syringe is released, the push ring rotates and resets under the action of the second elastic structure.
2. The device for realizing the rapid loading and releasing of the needle cylinder as claimed in claim 1, wherein the injection head is provided with an insertion hole for the needle cylinder to be inserted into, and the insertion hole is coaxially arranged with the ring where the bayonet lock is arranged, the push ring and the guide sleeve; and loading grooves are respectively arranged at the positions, corresponding to the clamping pins, on the edge of the jack, and the clamping part enters the injection head through the loading grooves.
3. Device for the rapid loading and release of the needle cylinder according to claim 2, characterized in that said gripping portion is provided at both ends with a first chamfer and said loading slot is provided at both ends with a second chamfer matching said first chamfer.
4. Device for the rapid loading and release of syringes according to claim 1, characterised in that said grip portion has a first bevel on the side facing said injector head, said end of said blocking pin being provided with a second bevel matching said first bevel.
5. The device for realizing the rapid loading and releasing of the needle cylinder as claimed in claim 1, wherein a bayonet lock sliding groove is arranged on the injection head, each bayonet lock corresponds to a bayonet lock sliding groove, the bayonet lock is arranged in the bayonet lock sliding groove, one end of the bayonet lock extends into the bayonet lock sliding groove, the first elastic structure is arranged between the bayonet lock and the bayonet lock sliding groove, and the bayonet lock moves along the bayonet lock sliding groove in a radial direction.
6. The device for realizing rapid loading and releasing of a syringe as claimed in claim 1, wherein a limiting boss is disposed at an end of the pushing ring extending into the guide sleeve, a guide sleeve limiting groove is disposed in the guide sleeve, the limiting boss extends into the guide sleeve limiting groove, the pushing ring rotates relative to the guide sleeve, and the limiting boss slides along the guide sleeve limiting groove to limit an angular range of rotation of the pushing ring.
7. The device for achieving rapid loading and release of a syringe according to claim 1, wherein the second elastic structure is a torsion spring, the torsion spring is sleeved on the outer ring of the push ring, one end of the torsion spring is fixed on the push ring, and the other end of the torsion spring is fixed on the guide sleeve.
8. The device for realizing the rapid loading and releasing of the needle cylinder as claimed in claim 1, wherein the clamping flange comprises two clamping parts which are symmetrically arranged in the circumferential direction, and the injection head is provided with two clamping pins which are symmetrically arranged in the circumferential direction.
9. The device for realizing the rapid loading and releasing of the needle cylinder as claimed in claim 8, wherein two stop pins are further arranged on the injection head, and the stop pins are arranged in the same ring with the bayonet locks and are arranged between the adjacent bayonet locks; a stop pin sliding groove is formed in the injection head, one end of the stop pin extends into the stop pin sliding groove, a third elastic structure is arranged between the stop pin sliding groove and the stop pin sliding groove, and the other end of the stop pin extends out of the stop pin sliding groove;
in the process of releasing the needle cylinder, after the bayonet lock is opened, the needle cylinder moves outwards in the axial direction, the clamping part pushes the two stop pins to be opened, the needle cylinder is separated from the injection head, and the stop pins are reset under the action of the third elastic structure.
10. The device for realizing rapid loading and release of the syringe as claimed in claim 9, wherein a release slot is further provided on the edge of the insertion hole on the injection head at a position corresponding to the stop pin, and during release, the clamping portion pushes the stop pin open and then slides out of the injection head along the release slot.
11. The device for realizing the quick loading and releasing of the needle cylinder as claimed in claim 1, wherein the clamping flange comprises four clamping parts, the four clamping parts are axially and uniformly distributed on the needle cylinder, and the injection head is provided with two clamping pins which are opposite to two clamping parts which are oppositely arranged.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210329521.6A CN114949460B (en) | 2017-04-21 | 2017-04-21 | Needle cylinder |
| CN201710268907.XA CN106913937B (en) | 2017-04-21 | 2017-04-21 | Needle cylinder and device for realizing quick loading and releasing of needle cylinder |
| US15/825,827 US10561791B2 (en) | 2017-04-21 | 2017-11-29 | Syringe, and device for rapidly loading and releasing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710268907.XA CN106913937B (en) | 2017-04-21 | 2017-04-21 | Needle cylinder and device for realizing quick loading and releasing of needle cylinder |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210329521.6A Division CN114949460B (en) | 2017-04-21 | 2017-04-21 | Needle cylinder |
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| Publication Number | Publication Date |
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| CN106913937A CN106913937A (en) | 2017-07-04 |
| CN106913937B true CN106913937B (en) | 2022-07-22 |
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| CN201710268907.XA Active CN106913937B (en) | 2017-04-21 | 2017-04-21 | Needle cylinder and device for realizing quick loading and releasing of needle cylinder |
| CN202210329521.6A Active CN114949460B (en) | 2017-04-21 | 2017-04-21 | Needle cylinder |
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| Application Number | Title | Priority Date | Filing Date |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112076364B (en) * | 2020-10-16 | 2024-05-17 | 山东威高普瑞医药包装有限公司 | Automatic injector |
| CN113134137B (en) * | 2021-04-21 | 2022-05-13 | 东莞安科医疗科技有限公司 | Syringe recognition device and high-pressure injector |
| CN113274590B (en) * | 2021-07-23 | 2021-10-08 | 科睿驰（深圳）医疗科技发展有限公司 | Connection device for medical equipment |
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| CN204723522U (en) * | 2015-06-20 | 2015-10-28 | 南京感控通化工产品经营部 | There is the high pressure injector syringe erecting device of opto-coupled feedback |
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| GB0806814D0 (en) * | 2008-04-15 | 2008-05-14 | Medical House Plc The | Improved autoinjector |
| CN105107063B (en) * | 2015-09-23 | 2019-03-01 | 上海必趣医疗科技有限公司 | The adjustable syringe of disposable medical cosmetology depth |
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| US6322535B1 (en) * | 1996-11-12 | 2001-11-27 | Medrad, Inc. | Prefillable syringes and injectors for use therewith |
| CN1638827A (en) * | 2001-01-18 | 2005-07-13 | 梅德拉股份有限公司 | Syringe interfaces and syringe adapters for use with medical injectors |
| CN2883763Y (en) * | 2005-12-01 | 2007-03-28 | 陈建强 | Nut antitheft device and special spanner |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114949460A (en) | 2022-08-30 |
| CN114949460B (en) | 2023-07-28 |
| CN106913937A (en) | 2017-07-04 |
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