CN113274590B - Connection device for medical equipment - Google Patents
Connection device for medical equipment Download PDFInfo
- Publication number
- CN113274590B CN113274590B CN202110837764.6A CN202110837764A CN113274590B CN 113274590 B CN113274590 B CN 113274590B CN 202110837764 A CN202110837764 A CN 202110837764A CN 113274590 B CN113274590 B CN 113274590B
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- China
- Prior art keywords
- clamping
- gear set
- limiting
- driving gear
- needle cylinder
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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
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
- F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack
- F16H19/043—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack for converting reciprocating movement in a continuous rotary movement or vice versa, e.g. by opposite racks engaging intermittently for a part of the stroke
Abstract
The invention provides a connecting device for medical equipment, which comprises a connecting structure, a needle cylinder structure, a clamping mechanism and a locking mechanism, wherein the needle cylinder structure is used for being connected with the connecting structure and inputting materials, the connecting structure is used for being connected with an injection device, the clamping mechanism is arranged between the needle cylinder structure and the connecting structure and enables the needle cylinder structure and the connecting structure to be clamped and matched or separated through the clamping mechanism, and the locking mechanism is in linkage fit with the needle cylinder structure and can drive the needle cylinder structure and the connecting structure to be fixedly connected or released by rotating the needle cylinder structure. In the connecting device of this embodiment, through the cooperation that sets up latch mechanism and locking mechanical system, cylinder structure and connection structure can realize the joint cooperation through latch mechanism, avoid both to take place the separation, and at the cylinder structure for connection structure rotatory in-process, can realize fixing between them through locking mechanical system, need not extra operation and can realize firm connection between the two, avoid both to take place unexpected separation, excellent in use effect.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a connecting device for medical equipment.
Background
In medical equipment, adopt the cylinder adapter to connect injection device and cylinder usually, both realize the joint cooperation through locating joint portion on the cylinder and locating the joint groove on the cylinder adaptation, in current cylinder adapter, generally only seal through the rubber ring between cylinder and the cylinder adapter, though connection structure is fairly simple, use cost is lower, but reliability that both connect is lower, the condition of both unexpected separations appears easily in the use, cause the material to leak, there is the potential safety hazard, the result of use is not good.
Therefore, it is necessary to improve upon the above-described problems to change the present situation.
Disclosure of Invention
In view of this, the invention provides a connecting device for medical equipment, which is used for solving the problems of low reliability and poor use effect of the connection between a needle cylinder adapter and a needle cylinder in the traditional medical equipment.
The invention proposes a connection device for a medical device, comprising:
the connecting structure is provided with a movable cavity and is used for connecting an external injection device;
the needle cylinder structure is detachably connected with the connecting structure and at least partially accommodated in the movable cavity;
the clamping mechanism is arranged between the connecting structure and the needle cylinder structure, at least a clamping position and a releasing position are arranged on a moving path of the needle cylinder structure, the needle cylinder structure is clamped and matched with the connecting structure through the clamping mechanism at the clamping position, and when the needle cylinder structure moves to the releasing position along the direction from the needle cylinder structure to the connecting structure, the clamping mechanism releases the needle cylinder structure; and
a locking mechanism movably connected to the connecting structure for locking or releasing the syringe structure and the connecting structure when the syringe structure is rotated relative to the connecting structure;
the connecting structure comprises a connecting seat and a connecting pipe, one end of the connecting pipe is connected to the connecting seat, the other end of the connecting pipe is provided with an annular groove, the connecting seat is provided with a connecting hole communicated with the connecting pipe, and the movable cavity is arranged on one side of the connecting seat; the needle cylinder structure comprises a cylinder body and a limiting seat, the cylinder body is arranged on one side of the limiting seat, the limiting seat is in clamping fit with the movable cavity, and the locking mechanism is used for locking or releasing the limiting seat and the connecting seat in the process that the limiting seat rotates relative to the connecting seat;
the barrel body comprises a first connecting barrel and a second connecting barrel, the second connecting barrel is arranged around the first connecting barrel, the first connecting barrel is in splicing fit with the connecting hole, the second connecting barrel is in splicing fit with the annular groove, the clamping mechanism is arranged between the first connecting barrel and the second connecting barrel, and a movable groove is formed in one side, facing the first connecting barrel, of the connecting pipe;
the clamping mechanism comprises a clamping plate, a clamping piece and an abutting piece, one end of the clamping plate is connected to the inner wall of the movable groove, the other end of the clamping plate is suspended in the movable groove, the clamping piece is connected to the limiting seat, the clamping piece is suspended between the first connecting cylinder and the second connecting cylinder, and one end of the abutting piece is connected to the connecting seat and extends from the connecting seat to the limiting seat;
the clamping piece is provided with a first abutting surface, the clamping piece is provided with a second abutting surface, at least part of the clamping piece is in clamping fit with the movable groove at the clamping position, the first abutting surface is attached to the second abutting surface, and the abutting piece abuts against one side, away from the clamping plate, of the clamping piece; and in the process that the needle cylinder structure moves towards the release position, the second abutting surface and the first abutting surface slide relatively, and the clamping plate covers the opening of the movable groove.
As a further alternative of this application, joint spare still is equipped with the direction inclined plane, the direction inclined plane is located joint spare is kept away from one side of second butt face the cylinder structure with when connection structure separates, the direction inclined plane with the inner wall relative slip of connecting pipe.
As a further alternative of the present application, the movable groove includes a first groove portion and a second groove portion that communicate with each other, and one end of the click plate is attached to an inner wall of the first groove portion; the clamping position, joint spare at least part with first slot part joint cooperation release position, the joint board is kept away from the one end of activity inslot inner wall is inserted and is located in the second slot part, and is used for the closing cap the opening of activity groove.
As a further alternative of this application, the cylinder structure has been offered and has been dodged the groove the joint position, it is located to dodge the groove the cylinder structure with between the connection structure the release position, connection structure with dodge the groove joint cooperation.
As a further alternative of the present application, the clamping mechanism is provided with a plurality of sets, and a plurality of sets the clamping mechanism is followed the circumferential direction of the needle cylinder structure is evenly set.
As a further alternative of the present application, the locking mechanism includes a driving gear set, a driven gear set and a limiting plate, the driving gear set is at least partially accommodated in the movable cavity, the driven gear set is respectively engaged with the limiting plate and the driving gear set, the driven gear set is used for driving the limiting plate to move relative to the connecting structure along a straight line, a tooth profile engaged with the driving gear set is provided on an outer wall of the syringe structure, and when the syringe structure rotates relative to the connecting structure, the syringe structure is used for driving the driving gear set to rotate;
the limiting plate comprises at least two limiting blocks, the number of the limiting blocks is at least two, the rack part is meshed with the driven gear set, a first limiting hole is formed in the outer wall of the needle cylinder structure, a second limiting hole is formed in the outer wall of the connecting structure, and the at least two limiting blocks are used for being respectively matched with the first limiting hole and the second limiting hole in an inserting mode; the extending direction of the first limiting hole and the second limiting hole is tangent to the rotating direction of the needle cylinder structure;
the driving gear set and the connecting structure are movably arranged relatively, at least a connecting position and a separating position are arranged on a moving path of the driving gear set, the driving gear set is meshed with the driven gear set at the connecting position, and the driving gear set is separated from the driven gear set at the separating position.
As a further alternative of the present application, the locking mechanism further includes a connecting frame, the connecting frame includes a connecting plate, a first rotating shaft and a second rotating shaft that are connected to each other, the connecting plate is connected to the connecting structure, the first rotating shaft and the second rotating shaft are parallel and spaced, the connecting frame is further provided with a guide hole, an extending direction of the guide hole is parallel to an extending direction of the first limiting hole and/or the second limiting hole, and the limiting plate is in sliding fit with the guide hole;
driven gear set includes engaged with first driven gear and second driven gear, first driven gear with drive gear set meshing, second driven gear keeps away from one side of first driven gear with the limiting plate meshing, just first driven gear with first rotation axis normal running fit, second driven gear with second rotation axis normal running fit.
As a further alternative of this application, drive gear group includes driving gear, connecting axle and drive gear, the connecting axle connect respectively in the driving gear with drive gear, the driving gear be used for with connection structure meshes, just connection structure offers the adjustment tank of bar, the adjustment tank is along the perpendicular to the direction of the central axis of cylinder structure extends, the connecting axle with adjustment tank normal running fit, and with adjustment tank relative sliding fit, drive gear be used for with driven gear set meshes.
As a further alternative of the present application, the locking mechanism further includes an adjusting bracket, the adjusting bracket is in sliding fit with the connecting structure, the adjusting bracket is provided with a through hole, and the connecting shaft is in rotating fit with the through hole; the adjusting frame is used for driving the driving gear set to move between the connecting position and the separating position, and an operating part is arranged on the outer wall of the adjusting frame.
The embodiment of the invention has the following beneficial effects:
when the connecting device of the embodiment is used, the connecting structure is connected to the injection device through a pipeline, the needle cylinder structure is correspondingly connected with the connecting structure at first, at the moment, the connecting structure and the needle cylinder structure can be clamped and matched through the clamping mechanism and are firmly connected, then the needle cylinder structure is rotated to be clamped and matched with the movable cavity of the connecting structure, and in the rotating process of the needle cylinder structure, the locking mechanism can be driven to move and the needle cylinder structure and the connecting structure are fixedly connected; when needs separation cylinder structure and connection structure, only need the reverse rotation cylinder structure so that locking mechanical system release cylinder structure and connection structure, the cylinder structure still realizes being connected through clamping mechanism and connection structure this moment, and only need drive cylinder structure next and remove towards connection structure, until removing to the release position, can make cylinder structure and connection structure release this moment, the simple operation.
In the connecting device of this embodiment, through the cooperation that sets up latch mechanism and locking mechanical system, cylinder structure and connection structure can realize the joint cooperation through latch mechanism, avoid both to take place the separation, and at the cylinder structure for connection structure rotatory in-process, can realize fixing between them through locking mechanical system, need not extra operation and can realize firm connection between the two, avoid both to take place unexpected separation, excellent in use effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is an isometric view of a coupling device in an embodiment of the invention;
FIG. 2 is a cross-sectional view of a coupling device in an embodiment of the invention;
FIG. 3 is an enlarged view of detail A of FIG. 2;
FIG. 4 is an enlarged view of detail B of FIG. 2;
FIG. 5 is a schematic view of the syringe structure in an embodiment of the present invention;
FIG. 6 is a schematic view of the connection structure to the locking mechanism in an embodiment of the present invention;
FIG. 7 is a schematic view of an attachment structure in an alternative perspective in an embodiment of the present invention;
FIG. 8 is an isometric view of an adjustment bracket in an embodiment of the invention;
reference numerals:
10. a connecting device;
100. a syringe structure; 110. a barrel; 111. a first connecting cylinder; 112. a second connecting cylinder; 120. a limiting seat; 121. a first limit hole; 122. an avoidance groove;
200. a connecting structure; 210. a connecting seat; 211. a movable cavity; 212. connecting holes; 213. an adjustment groove; 214. a second limiting hole; 220. a connecting pipe; 221. an annular groove; 222. a movable groove; 2221. a first groove portion; 2222. a second groove portion;
300. a clamping mechanism; 310. a clamping and connecting plate; 311. a first abutting surface; 320. a clamping piece; 321. a clamping part; 3211. a second abutting surface; 3212. a guide slope; 322. an extension portion; 3221. a limiting groove; 330. an abutting member; 331. an abutting convex part;
400. a locking mechanism; 410. a drive gear set; 411. a driving gear; 412. a connecting shaft; 413. a drive gear; 420. a driven gear set; 421. a first driven gear; 422. a second driven gear; 430. a connecting frame; 431. a connecting plate; 432. a first rotating shaft; 433. a second rotation shaft; 434. a guide hole; 440. a limiting plate; 441. a rack portion; 442. a limiting block; 450. an adjusting bracket; 451. a through hole; 452. an operation unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides a connection device 10 for a medical apparatus, which includes a syringe structure 100, a connection structure 200, a latch mechanism 300, and a locking mechanism 400, where the syringe structure 100 is used to connect with the connection structure 200 and input a material, the connection structure 200 is used to connect with an injection device, the latch mechanism 300 is disposed between the syringe structure 100 and the connection structure 200, and enables the syringe structure 100 and the connection structure 200 to be engaged with or separated from each other by the latch mechanism 300, and the locking mechanism 400 is in linkage with the syringe structure 100 and is capable of driving the syringe structure 100 and the connection structure 200 to be fixedly connected or released by rotating the syringe structure 100.
Specifically, referring to fig. 6, the connecting structure 200 is provided with a movable cavity 211; the syringe structure 100 is detachably connected to the connecting structure 200 and at least partially accommodated in the movable cavity 211; the clamping mechanism 300 is arranged between the connecting structure 200 and the syringe structure 100, and at least has a clamping position and a releasing position on the moving path of the syringe structure 100, at the clamping position, the syringe structure 100 is clamped and matched with the connecting structure 200 through the clamping mechanism 300, and when the syringe structure 100 moves to the releasing position along the direction from the syringe structure 100 to the connecting structure 200, the clamping mechanism 300 releases the syringe structure 100; the locking mechanism 400 is movably connected to the connecting structure 200, and the locking mechanism 400 is used to lock or release the syringe structure 100 and the connecting structure 200 when the syringe structure 100 is rotated with respect to the connecting structure 200.
When the connecting device 10 of the present embodiment is used, the connecting structure 200 is connected to the injection device through a pipeline, the syringe structure 100 is first correspondingly connected to the connecting structure 200, at this time, the connecting structure 200 and the syringe structure 100 can be in snap fit through the snap-fit mechanism 300, and are firmly connected, and then the syringe structure 100 is rotated to be in snap fit with the movable cavity 211 of the connecting structure 200, so that the locking mechanism 400 can be driven to move and the syringe structure 100 and the connecting structure 200 can be fixedly connected in the rotating process of the syringe structure 100; when the syringe structure 100 and the connection structure 200 need to be separated, only the syringe structure 100 needs to be rotated reversely so that the locking mechanism 400 releases the syringe structure 100 and the connection structure 200, at this time, the syringe structure 100 is still connected with the connection structure 200 through the clamping mechanism 300, and then only the syringe structure 100 needs to be driven to move towards the connection structure 200 until the syringe structure 100 moves to the release position, so that the syringe structure 100 and the connection structure 200 can be released, and the operation is convenient.
In the connecting device 10 of this embodiment, through the cooperation that sets up latch mechanism 300 and locking mechanical system 400, cylinder structure 100 and connection structure 200 can realize the joint cooperation through latch mechanism 300, avoid both to take place the separation, at cylinder structure 100 for connection structure 200 rotatory in-process, can realize fixing between them through locking mechanical system 400, need not extra operation and can realize firm connection between the two, avoid both to take place unexpected separation, excellent in use effect.
Specifically, referring to fig. 2 and 3, the connection structure 200 includes a connection seat 210 and a connection pipe 220, one end of the connection pipe 220 is connected to the connection seat 210, the other end of the connection pipe 220 is provided with an annular groove 221, the connection seat 210 is provided with a connection hole 212 communicated with the connection pipe 220, and the movable cavity 211 is disposed at one side of the connection seat 210; the syringe structure 100 comprises a barrel 110 and a limiting seat 120, the barrel 110 is arranged on one side of the limiting seat 120, the limiting seat 120 is in clamping fit with the movable cavity 211, and the locking mechanism 400 is used for locking or releasing the limiting seat 120 and the connecting seat 210 in the process that the limiting seat 120 rotates relative to the connecting seat 210;
in this embodiment, referring to fig. 3, the barrel 110 includes a first connecting cylinder 111 and a second connecting cylinder 112, the second connecting cylinder 112 is disposed around the first connecting cylinder 111, the first connecting cylinder 111 is inserted into and engaged with the connecting hole 212, the second connecting cylinder 112 is inserted into and engaged with the annular groove 221, the locking mechanism 300 is disposed between the first connecting cylinder 111 and the second connecting cylinder 112, and a movable groove 222 is disposed on a side of the connecting pipe 220 facing the first connecting cylinder 111.
With this arrangement, when the syringe structure 100 is connected to the connecting structure 200, the first connecting cylinder 111 is engaged with the connecting hole 212, and the second connecting cylinder 112 is engaged with the annular groove 221, so that the sealing effect between the syringe structure 100 and the connecting structure 200 can be ensured, and by disposing the latch mechanism 300 between the first connecting cylinder 111 and the second connecting cylinder 112, the degree of fastening between the syringe structure 100 and the connecting structure 200 can be ensured without affecting the sealing between the syringe structure 100 and the connecting structure 200, and the connecting device 10 has a compact structure.
Specifically, the clamping mechanism 300 includes a clamping plate 310, a clamping member 320, and an abutting member 330, wherein one end of the clamping plate 310 is connected to the inner wall of the movable groove 222, the other end is suspended in the movable groove 222, the clamping member 320 is connected to the limiting seat 120, the clamping member 320 is suspended between the first connecting cylinder 111 and the second connecting cylinder 112, one end of the abutting member 330 is connected to the connecting seat 210, and extends from the connecting seat 210 toward the limiting seat 120;
the clamping plate 310 is provided with a first abutting surface 311, the clamping piece 320 is provided with a second abutting surface 3211, at least part of the clamping piece 320 is in clamping fit with the movable groove 222 at the clamping position, the first abutting surface 311 is attached to the second abutting surface 3211, and the abutting piece 330 abuts against one side of the clamping piece 320, which is far away from the clamping plate 310; in the process of moving the syringe structure 100 toward the release position, the second abutting surface 3211 slides relative to the first abutting surface 311, and the latch plate 310 covers the opening of the movable slot 222.
In this embodiment, the clamping plate 310 is a flexible plate; when the connecting device 10 of this embodiment is used, in the process that the syringe structure 100 moves toward and connects with the connecting structure 200, the abutting member 330 first contacts with the clip member 320, and when the clip member 320 corresponds to the opening of the movable slot 222, the movable slot 222 can be in clip fit with the clip member, the abutting member 330 is disposed on the inner side of the clip member 320 and can abut against the inner wall of the clip member 320, so that the clip member 320 is fixed with the movable slot 222, at this time, the first abutting surface 311 of the clip plate 310 can abut against the second abutting surface 3211 of the clip member 320, and the syringe structure 100 and the connecting structure 200 are fixedly connected through the clip mechanism 300, and the connection is firm;
when the syringe structure 100 and the connecting structure 200 need to be separated, as shown in the placement state shown in fig. 3, the syringe structure 100 needs to be driven to move upward, in this process, the second abutting surface 3211 of the engaging member 320 and the first abutting surface 311 slide relatively, and the engaging plate 310 is driven to move toward the inner side of the movable slot 222, in this process, the abutting member 330 is also separated from the inner wall of the engaging member 320, so that the engaging member 320 can further deform toward the inner side;
after the clamping member 320 is separated from the movable groove 222 and moves to the release position, the clamping plate 310 deforms by abutting of the clamping member 320 and covers the opening of the movable groove 222, at this time, when the clamping member 320 moves downwards, the outer wall of the clamping plate 310 and the clamping member 320 slide relatively, and the clamping member 320 is prevented from being matched with the movable groove 222 in a clamping manner, so that the separation of the syringe structure 100 and the connecting structure 200 is realized.
Referring to fig. 4, in the present embodiment, the engaging member 320 includes an engaging portion 321 and an extending portion 322, two opposite ends of the extending portion 322 are respectively connected to the limiting seat 120 and the engaging portion 321, the inner side of the extending portion 322 is provided with a limiting groove 3221, the abutting member 330 has an abutting convex portion 331, when the syringe structure 100 is located at the engaging position, the abutting convex portion 331 is engaged with the limiting groove 3221, and can limit the movement of the engaging member 320, at this time, the engaging portion 321 is engaged with the movable groove 222.
Further, referring to fig. 3, the clip 320 further has a guiding inclined surface 3212, the guiding inclined surface 3212 is located on a side of the clip 320 away from the second abutting surface 3211, and when the syringe structure 100 is separated from the connecting structure 200, the guiding inclined surface 3212 slides relative to the inner wall of the connecting tube 220.
With this arrangement, after the syringe structure 100 moves to the release position and needs to be separated from the connecting structure 200, the guiding inclined surface 3212 can slide relatively to the outer wall of the engaging plate 310, for example, when the engaging plate 310 fails to completely cover the opening of the movable slot 222, the guiding inclined surface 3212 can also contact with the edge of the movable slot 222 and drive the engaging member 320 to deform toward the outside of the movable slot 222, thereby preventing the engaging member 320 from engaging with the movable slot 222.
Specifically, in the present embodiment, the movable slot 222 includes a first slot portion 2221 and a second slot portion 2222 that are communicated with each other, and one end of the clamping plate 310 is connected to an inner wall of the first slot portion 2221; in the clamping position, the clamping member 320 is at least partially clamped and matched with the first slot portion 2221, and in the releasing position, one end of the clamping plate 310, which is far away from the inner wall of the movable slot 222, is inserted into the second slot portion 2222 and is used for covering the opening of the movable slot 222.
When the needle cylinder structure 100 is located at the engaging position in the connecting device 10 of the present embodiment, as shown in fig. 3, the cross section of the engaging plate 310 is substantially obtuse, and when the engaging member 320 moves upward and abuts against the engaging plate 310, the engaging plate 310 deforms under the abutting action of the engaging member 320, and the obtuse angle increases along with the upward movement until the end of the engaging plate 310 is inserted into the second slot portion 2222, so that the structure of the cover movable slot 222 can be formed, and the engaging mechanism 300 has a compact structure as a whole, which facilitates the arrangement of the connecting device 10.
Further, referring to fig. 5, the syringe structure 100 is provided with an avoiding groove 122, in the engaging position, the avoiding groove 122 is located between the syringe structure 100 and the connecting structure 200, and in the releasing position, the connecting structure 200 is engaged with the avoiding groove 122.
When the connecting device 10 of the present embodiment is used, the syringe structure 100 and the connecting structure 200 are connected through the locking mechanism 300, at this time, the limiting seat 120 of the syringe structure 100 is not moved into the movable cavity 211, and the limiting seat 120 can be in locking fit with the movable cavity 211 along with the syringe structure 100 rotating 90 °, and is fixed through the locking mechanism 400; when the syringe structure 100 and the connecting structure 200 need to be separated, the syringe structure 100 is rotated reversely by 90 ° first until the avoiding slot 122 corresponds to the connecting seat 210, and then the syringe structure 100 is driven to move toward the connecting seat 210 to the release position, and at the release position, the connecting seat 210 is at least partially accommodated in the avoiding slot 122, so as to release the syringe structure 100 and the connecting structure 200.
Referring to fig. 5 and 6, in the present embodiment, a plurality of sets of latch mechanisms 300 are provided, and the plurality of sets of latch mechanisms 300 are uniformly arranged along the circumferential direction of the syringe structure 100.
It can be understood that, by arranging the plurality of sets of clamping mechanisms 300 to cooperate with the syringe structure 100 and the connecting structure 200, the firmness of the connection between the syringe structure 100 and the connecting structure 200 can be improved, and because the plurality of sets of clamping mechanisms 300 are arranged at relatively intervals, the clamping plates 310 and the clamping members 320 can have deformed spaces, thereby realizing the clamping and separating actions of the syringe structure 100 and the connecting structure 200.
Specifically, referring to fig. 1 and 4, the locking mechanism 400 includes a driving gear set 410, a driven gear set 420 and a limiting plate 440, the driving gear set 410 is at least partially accommodated in the movable cavity 211, the driven gear set 420 is respectively engaged with the limiting plate 440 and the driving gear set 410, the driven gear set 420 is used for driving the limiting plate 440 to move along a straight line relative to the connecting structure 200, a tooth form engaged with the driving gear set 410 is provided on an outer wall of the syringe structure 100, and when the syringe structure 100 rotates relative to the connecting structure 200, the syringe structure 100 is used for driving the driving gear set 410 to rotate.
Referring to fig. 5 and 6, in the present embodiment, the limiting plate 440 includes at least two rack portions 441 and limiting blocks 442, the rack portions 441 are engaged with the driven gear set 420, the outer wall of the syringe structure 100 is provided with a first limiting hole 121, the outer wall of the connecting structure 200 is provided with a second limiting hole 214, and the at least two limiting blocks 442 are used for being respectively inserted into and matched with the first limiting hole 121 and the second limiting hole 214; the extending direction of the first limiting hole 121 and the second limiting hole 214 is tangent to the rotating direction of the syringe structure 100;
the driving gear set 410 and the connecting structure 200 are movably disposed relative to each other, and at least a connecting position and a disconnecting position are provided on a moving path of the driving gear set 410, wherein the driving gear set 410 is engaged with the driven gear set 420 at the connecting position, and the driving gear set 410 is disconnected from the driven gear set 420 at the disconnecting position.
When the connecting device 10 of the present embodiment is used, when the locking mechanism 400 needs to be moved during the rotation of the syringe structure 100, the locking mechanism 400 only needs to be moved to the connecting position, and the driven gear set 420 can be driven by the driving gear set 410; when the limiting plate 440 needs to be adjusted by independently operating the driven gear set 420, the driving gear set 410 can be moved to the separated position, and the driving gear set 410 is not driven to rotate by rotating the driven gear set 420, so that the limiting plate 440 can be adjusted independently.
Specifically, referring to fig. 4, the locking mechanism 400 further includes a connecting frame 430, the connecting frame 430 includes a connecting plate 431, a first rotating shaft 432 and a second rotating shaft 433 which are connected to each other, the connecting plate 431 is connected to the connecting structure 200, the first rotating shaft 432 and the second rotating shaft 433 are parallel and spaced apart, the connecting frame 430 is further provided with a guide hole 434, an extending direction of the guide hole 434 is parallel to an extending direction of the first limiting hole 121 and/or the second limiting hole 214, and the limiting plate 440 is in sliding fit with the guide hole 434;
in this embodiment, through setting up link 430 and driven gear set 420 and the cooperation of limiting plate 440, not only can realize carrying out the function of fixing a position to driven gear set 420, can also realize leading the removal of limiting plate 440, simple structure, excellent in use effect.
In this embodiment, the driven gear set 420 includes a first driven gear 421 and a second driven gear 422, which are engaged with each other, the first driven gear 421 is engaged with the driving gear set 410, a side of the second driven gear 422 away from the first driven gear 421 is engaged with the limiting plate 440, the first driven gear 421 is rotatably engaged with the first rotating shaft 432, and the second driven gear 422 is rotatably engaged with the second rotating shaft 433.
It can be understood that, by arranging two driven gears to be matched with the driving gear set 410, the limiting plate 440 can be driven to perform corresponding actions in the rotation process of the syringe structure 100, and the syringe structure is compact in structure and good in use effect.
Specifically, referring to fig. 4 and 7, the driving gear set 410 includes a driving gear 411, a connecting shaft 412 and a driving gear 413, the connecting shaft 412 is respectively connected to the driving gear 411 and the driving gear 413, the driving gear 411 is configured to be engaged with the connecting structure 200, the connecting structure 200 is provided with a strip-shaped adjusting groove 213, the adjusting groove 213 extends in a direction perpendicular to the central axis of the syringe structure 100, the connecting shaft 412 is rotatably engaged with the adjusting groove 213 and is relatively slidably engaged with the adjusting groove 213, and the driving gear 413 is configured to be engaged with the driven gear set 420.
From this setting, through removing connecting axle 412 along adjustment tank 213, can drive driving gear 411 and remove between hookup location and separation position to realize switching between the mode with spacing seat 120 meshing or separation, simple structure, excellent in use effect.
Further, referring to fig. 6 to 8, the locking mechanism 400 further includes an adjusting bracket 450, the adjusting bracket 450 is slidably engaged with the connecting structure 200, the adjusting bracket 450 is provided with a through hole 451, and the connecting shaft 412 is rotatably engaged with the through hole 451; the adjusting bracket 450 is used for driving the driving gear set 410 to move between a connection position and a separation position, wherein an operation part 452 is arranged on the outer wall of the adjusting bracket 450.
It can be understood that, through setting up alignment jig 450 and connecting seat 210 sliding fit, can realize leading the removal of drive gear group 410, through setting up alignment jig 450 and connecting axle 412 normal running fit, can realize drive gear group 410's regulatory function and rotation function, simple structure, excellent in use effect.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A connection device for a medical device, comprising:
the connecting structure is provided with a movable cavity and is used for connecting an external injection device;
the needle cylinder structure is detachably connected with the connecting structure and at least partially accommodated in the movable cavity;
the clamping mechanism is arranged between the connecting structure and the needle cylinder structure, at least a clamping position and a releasing position are arranged on a moving path of the needle cylinder structure, the needle cylinder structure is clamped and matched with the connecting structure through the clamping mechanism at the clamping position, and when the needle cylinder structure moves to the releasing position along the direction from the needle cylinder structure to the connecting structure, the clamping mechanism releases the needle cylinder structure; and
a locking mechanism movably connected to the connecting structure for locking or releasing the syringe structure and the connecting structure when the syringe structure is rotated relative to the connecting structure;
the connecting structure comprises a connecting seat and a connecting pipe, one end of the connecting pipe is connected to the connecting seat, the other end of the connecting pipe is provided with an annular groove, the connecting seat is provided with a connecting hole communicated with the connecting pipe, and the movable cavity is arranged on one side of the connecting seat; the needle cylinder structure comprises a cylinder body and a limiting seat, the cylinder body is arranged on one side of the limiting seat, the limiting seat is in clamping fit with the movable cavity, and the locking mechanism is used for locking or releasing the limiting seat and the connecting seat in the process that the limiting seat rotates relative to the connecting seat;
the barrel body comprises a first connecting barrel and a second connecting barrel, the second connecting barrel is arranged around the first connecting barrel, the first connecting barrel is in splicing fit with the connecting hole, the second connecting barrel is in splicing fit with the annular groove, the clamping mechanism is arranged between the first connecting barrel and the second connecting barrel, and a movable groove is formed in one side, facing the first connecting barrel, of the connecting pipe;
the clamping mechanism comprises a clamping plate, a clamping piece and an abutting piece, one end of the clamping plate is connected to the inner wall of the movable groove, the other end of the clamping plate is suspended in the movable groove, the clamping piece is connected to the limiting seat, the clamping piece is suspended between the first connecting cylinder and the second connecting cylinder, and one end of the abutting piece is connected to the connecting seat and extends from the connecting seat to the limiting seat;
the clamping piece is provided with a first abutting surface, the clamping piece is provided with a second abutting surface, at least part of the clamping piece is in clamping fit with the movable groove at the clamping position, the first abutting surface is attached to the second abutting surface, and the abutting piece abuts against one side, away from the clamping plate, of the clamping piece; and in the process that the needle cylinder structure moves towards the release position, the second abutting surface and the first abutting surface slide relatively, and the clamping plate covers the opening of the movable groove.
2. The connecting device according to claim 1, wherein the engaging member further has a guiding inclined surface, the guiding inclined surface is located on a side of the engaging member away from the second abutting surface, and when the syringe structure is separated from the connecting structure, the guiding inclined surface slides relative to the inner wall of the connecting tube.
3. The connecting device as claimed in claim 1, wherein the movable groove includes a first groove portion and a second groove portion communicating with each other, and one end of the click plate is connected to an inner wall of the first groove portion; the clamping position, joint spare at least part with first slot part joint cooperation release position, the joint board is kept away from the one end of activity inslot inner wall is inserted and is located in the second slot part, and is used for the closing cap the opening of activity groove.
4. The connecting device according to claim 1, wherein the syringe structure is provided with an avoiding groove, the avoiding groove is located between the syringe structure and the connecting structure in the clamping position, and the connecting structure is in clamping fit with the avoiding groove in the releasing position.
5. The connecting device according to any one of claims 1 to 4, wherein a plurality of sets of clamping mechanisms are provided, and the plurality of sets of clamping mechanisms are uniformly arranged along the circumferential direction of the needle cylinder structure.
6. The connecting device according to claim 1, wherein the locking mechanism comprises a driving gear set, a driven gear set and a limiting plate, the driving gear set is at least partially accommodated in the movable cavity, the driven gear set is respectively engaged with the limiting plate and the driving gear set, the driven gear set is used for driving the limiting plate to move relative to the connecting structure along a straight line, the outer wall of the syringe structure is provided with a tooth form engaged with the driving gear set, and when the syringe structure rotates relative to the connecting structure, the syringe structure is used for driving the driving gear set to rotate;
the limiting plate comprises at least two limiting blocks, the number of the limiting blocks is at least two, the rack part is meshed with the driven gear set, a first limiting hole is formed in the outer wall of the needle cylinder structure, a second limiting hole is formed in the outer wall of the connecting structure, and the at least two limiting blocks are used for being respectively matched with the first limiting hole and the second limiting hole in an inserting mode; the extending direction of the first limiting hole and the second limiting hole is tangent to the rotating direction of the needle cylinder structure;
the driving gear set and the connecting structure are movably arranged relatively, at least a connecting position and a separating position are arranged on a moving path of the driving gear set, the driving gear set is meshed with the driven gear set at the connecting position, and the driving gear set is separated from the driven gear set at the separating position.
7. The connecting device according to claim 6, wherein the locking mechanism further comprises a connecting frame, the connecting frame comprises a connecting plate, a first rotating shaft and a second rotating shaft which are connected with each other, the connecting plate is connected to the connecting structure, the first rotating shaft and the second rotating shaft are arranged in parallel and at intervals, the connecting frame is further provided with a guide hole, the extending direction of the guide hole is parallel to the extending direction of the first limiting hole and/or the second limiting hole, and the limiting plate is in sliding fit with the guide hole;
driven gear set includes engaged with first driven gear and second driven gear, first driven gear with drive gear set meshing, second driven gear keeps away from one side of first driven gear with the limiting plate meshing, just first driven gear with first rotation axis normal running fit, second driven gear with second rotation axis normal running fit.
8. The connecting device as claimed in claim 6, wherein the driving gear set comprises a driving gear, a connecting shaft and a driving gear, the connecting shaft is respectively connected to the driving gear and the driving gear, the driving gear is engaged with the connecting structure, the connecting structure is provided with a strip-shaped adjusting groove, the adjusting groove extends along a direction perpendicular to a central axis of the needle cylinder structure, the connecting shaft is rotationally matched with the adjusting groove and is in relative sliding fit with the adjusting groove, and the driving gear is engaged with the driven gear set.
9. The connecting device according to claim 8, wherein the locking mechanism further comprises an adjusting bracket, the adjusting bracket is in sliding fit with the connecting structure and is provided with a through hole, and the connecting shaft is in rotating fit with the through hole; the adjusting frame is used for driving the driving gear set to move between the connecting position and the separating position, and an operating part is arranged on the outer wall of the adjusting frame.
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|---|---|---|---|
| CN202110837764.6A CN113274590B (en) | 2021-07-23 | 2021-07-23 | Connection device for medical equipment |
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| CN202110837764.6A CN113274590B (en) | 2021-07-23 | 2021-07-23 | Connection device for medical equipment |
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| CN113274590B true CN113274590B (en) | 2021-10-08 |
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