CN113230485A - Syringe retaining device and fluid injection device - Google Patents
Syringe retaining device and fluid injection device Download PDFInfo
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- CN113230485A CN113230485A CN202110423677.6A CN202110423677A CN113230485A CN 113230485 A CN113230485 A CN 113230485A CN 202110423677 A CN202110423677 A CN 202110423677A CN 113230485 A CN113230485 A CN 113230485A
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- needle cylinder
- probe
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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
- A61M5/007—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 for contrast media
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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
- A61M5/008—Racks for supporting syringes or needles
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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
Abstract
The invention discloses a needle cylinder retaining device and a fluid injection device, wherein the needle cylinder retaining device comprises a fixing piece and a locking device, and the fixing piece and the locking device are matched with each other to lock and unlock a needle cylinder; the fluid injection device comprises the needle cylinder retaining device, a shell and a needle cylinder protective sleeve, wherein a supporting arm is arranged between the shell and the fixing piece, and two ends of the supporting arm are respectively fixedly connected with the shell and the fixing piece; the needle cylinder protective sleeve is arranged in a space enclosed by the shell, the supporting arm and the fixing piece, and one end of the needle cylinder protective sleeve is connected with a third opening on the shell; the cylindrical body of the needle cylinder is arranged in the needle cylinder protective sleeve, and the injection part of the needle cylinder sequentially passes through the fixing piece and the locking device and is clamped in the locking device; the driving piston in the third opening on the shell extends into the cylindrical body of the syringe and drives the syringe plunger to move; the invention solves the problems of sterility, convenience and safety of the needle cylinder in the processes of installation, fixation and disassembly.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a syringe retaining device and a fluid injection device.
Background
At present, medical imaging contrast equipment comprises a tomography device (CT), a magnetic resonance device (MRI), a digital subtraction angiography Device (DSA) and the like, wherein the equipment needs to inject fluid into a human body in certain detection scenes, and a fluid injection device matched with the contrast equipment needs to be used for injecting the fluid into the human body.
Chinese patent No. CN100512894 discloses a "front-loading pressure jacket system with a syringe holder and an illumination device", and specifically discloses "the injection device comprises a syringe and a pressure jacket assembly connected to the syringe. The injector includes a housing defining a central opening and a drive piston extendable through the central opening to power a syringe plunger disposed within the syringe. The pressure jacket assembly includes a pressure jacket and at least one support arm coupled to and extending outwardly from the housing. A syringe retainer is attached to the at least one support arm. The syringe retaining member defines a syringe receiving slot for receiving at least a portion of the syringe. A light source is disposed on the support arm and faces the pressure jacket to illuminate the syringe. The barrel includes an alignment flange that preferably defines a raised bubble viewing window. The alignment flange is used to properly orient the syringe in the pressure jacket ". According to the invention, the fixing structure is arranged at the front end of the needle cylinder, so that the front end of the needle cylinder is shielded by the fixing structure and cannot be completely displayed, and meanwhile, the luer head distance between the mounting structural part and the front end of the needle cylinder is shortened, and when medical workers mount and dismount pipelines, the fixing structure is easily touched, so that the sterile environment of the medical workers is damaged.
Chinese invention patent No. CN100506313 discloses a "front-end loading medical injector and a syringe, a syringe interface member, a syringe adapter, and a syringe plunger used therewith," and specifically discloses a "syringe comprising an injector, a syringe interface member, a syringe adapter, and a piston/plunger assembly. Preferably, the syringe is configured to engage the syringe interface member mechanism and the syringe is engageable with the injector regardless of the orientation of the syringe to the injector and regardless of the orientation of the piston/plunger assembly. The injector piston or driver includes a sensing pin disposed at its forward end that is capable of sensing contact with the syringe plunger during advancement of the piston or driver into contact with the plunger. The plunger is automatically pushed forward upon connection of the syringe to the injector or the plunger is automatically moved forward after activation by the operator. Such an injector may include or be configured to receive two syringes that may inject fluids, for example, simultaneously into two injection sites on a patient ". The invention needs the special structure form of the bottom end of the syringe, and requires the special matching structure and installation mode of the injection head and the bottom end of the syringe, in addition, the mode of fixing the syringe at the bottom end has potential safety hazard during high-pressure injection, the bottom end of the syringe is broken and flies out possibly, and the potential safety hazard is brought to the personal safety of doctors and patients.
Disclosure of Invention
The invention aims to provide a syringe holding device and a fluid injection device, which aim to solve the problem that the fluid injection device in the prior art is easy to cause operation sterile environment pollution.
In order to achieve the purpose, the invention provides the following technical scheme:
in one aspect, the invention provides a syringe retaining device, which comprises a fixing piece and a locking device arranged on one side of the fixing piece and used for clamping an injection part of a syringe in a clamping manner, wherein the fixing piece and the locking device are matched with each other to lock and unlock the syringe.
Furthermore, the locking device comprises a fixed baffle, a receiving piece and a locking piece, and the fixed piece, the fixed baffle and the locking piece are all circular rings; a first arc-shaped groove and a second arc-shaped groove for containing the circular locking piece are formed in one side face of the circular fixing piece, the width of the first arc-shaped groove is the same as that of the circular fixing piece, the second arc-shaped groove is close to the center of the circular fixing piece, the depth of the second arc-shaped groove is the same as that of the first arc-shaped groove, the second arc-shaped groove is communicated with the first arc-shaped groove, and the width of the second arc-shaped groove is smaller than or equal to that of the circular locking piece; the circular fixing baffle is provided with an opening corresponding to the first arc-shaped groove, one side face of the circular fixing baffle is provided with two arc-shaped supporting plates, the two arc-shaped supporting plates are symmetrically and respectively arranged at two sides of the opening, the two arc-shaped supporting plates are arranged along the outer circumference of the circular fixing baffle, and the circular fixing baffle is fixedly connected with the side face of the circular fixing piece, which is provided with the first arc-shaped groove, through the two arc-shaped supporting plates; the circular locking piece is arranged in a space defined by the circular fixing piece, the circular fixing baffle and the two arc-shaped supporting plates, and two side surfaces of the circular locking piece are respectively contacted with the circular fixing piece and the circular fixing baffle; two first grooves are formed in the inner wall of the circular fixing piece, the two first grooves are symmetrically and respectively arranged at two ends of the first arc-shaped groove, and two second grooves which correspond to and are flush with the first grooves are formed in the inner wall of the circular locking piece; the receiving piece is arranged in a space defined by the circular fixing piece, the circular locking piece and the circular fixing baffle, two first flanges which are respectively matched with the first groove and the second groove are arranged on the receiving piece, and a first opening used for clamping the injection part of the needle cylinder is arranged on the receiving piece; the circular locking piece is provided with a handle, the handle is arranged in the first arc-shaped groove and extends out of the first arc-shaped groove, and a positioning plate is arranged at one end of the handle, which extends out of the first arc-shaped groove; when the in-place plate is positioned at one end of the first arc-shaped groove and the first groove and the second groove are positioned at corresponding positions, the receiving piece unlocks the needle cylinder, and when the in-place plate is positioned at the other end of the first arc-shaped groove and the first groove and the second groove are positioned at different positions, the receiving piece locks the needle cylinder.
Furthermore, the locking device comprises a movable piece, a handle, a hinge assembly and a guide rail plate, wherein the fixed piece is annular, and the guide rail plate is semicircular; the hinge assembly is fixedly connected with the annular fixing piece, the hinge assembly is connected with the semicircular guide rail plate in a sliding mode, the semicircular guide rail plate is fixedly connected with the movable piece, and the handle is detachably connected with the movable piece; the movable part is arranged in the circular fixing part, two second flanges are symmetrically arranged on the movable part, two baffle plates matched with the second flanges are symmetrically arranged on the inner wall of the circular fixing part, and a second opening used for clamping the injection part of the needle cylinder is arranged on the movable part; the handle drives the semicircular guide rail plate to slide along the hinge assembly and simultaneously drives the movable part to rotate in the circular fixing part, when the two second flanges rotate to the two baffle plates, the movable part locks the needle cylinder, and when the two second flanges rotate to keep away from the two baffle plates, the movable part unlocks the needle cylinder.
Further, the hinge assembly comprises a hinge seat, a hinge upper cover and a hinge lower cover, the hinge seat is fixedly connected with the fixing piece, the hinge seat is hinged with the hinge lower cover through a pin shaft, the hinge lower cover is fixedly connected with the hinge upper cover, the edge of the guide rail plate is limited between the hinge lower cover and the hinge upper cover, and the guide rail plate is connected with the hinge lower cover and the hinge upper cover in a sliding mode.
Furthermore, the movable part and the handle are detachably connected through magnets or magnetic metal.
In another aspect, the present invention provides a fluid injection device, comprising the above-mentioned syringe retaining device, a housing and a syringe protective sheath, wherein the housing is disposed opposite to the fixing member, at least one supporting arm is disposed between the housing and the fixing member, one end of the supporting arm is fixedly connected to the housing, and the other end of the supporting arm is fixedly connected to a side surface of the fixing member away from the locking device; the needle cylinder protective sleeve is arranged in a space defined by the shell, the supporting arm and the fixing piece, a third opening is formed in the shell, and one end of the needle cylinder protective sleeve is connected with the third opening in the shell; the cylindrical body of the needle cylinder is arranged in the needle cylinder protective sleeve, and the injection part of the needle cylinder sequentially passes through the fixing piece and the locking device and is clamped in the locking device; and a driving piston penetrates through the third opening on the shell, extends into the cylindrical body of the needle cylinder and drives the needle cylinder plunger of the needle cylinder to move in the cylindrical body.
Furthermore, be equipped with first probe in the support arm, be equipped with the cylinder sensor that targets in place in the casing, the cover is equipped with first spring on the first probe, and first spring is close to the one end and the casing fixed connection that the cylinder sensor that targets in place, and the other end and first probe fixed connection target in place, when the cylinder installation targets in place, mutually supports between mounting and the locking device and realizes the lock to the cylinder, and locking device extrudees first probe, and first spring on the first probe is in compression state, and first probe triggers the cylinder sensor that targets in place.
Furthermore, a second probe and a needle cylinder insertion sensor are arranged in the shell, the second probe is arranged at a third opening on the shell, a second spring is sleeved on the second probe, one end, close to the needle cylinder insertion sensor, of the second spring is fixedly connected with the shell, the other end of the second spring is fixedly connected with the second probe, when the needle cylinder is inserted into the needle cylinder protection sleeve, the needle cylinder extrudes the second probe, the second spring on the second probe is in a compression state, and the second probe triggers the needle cylinder insertion sensor.
Compared with the prior art, the invention has the beneficial effects that:
the syringe holding device and the fluid injection device provided by the invention are suitable for tomography equipment, nuclear magnetic resonance equipment, digital subtraction angiography equipment and the like, can avoid pollution to the sterile environment of the operation, and can improve the experience of a user and save the installation time of the user; the invention solves the problems of sterility, convenience and safety of the needle cylinder in the processes of installation, fixation and disassembly.
Drawings
FIG. 1 is a schematic view of an exploded structure of a syringe holding apparatus according to embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the construction of a syringe holding apparatus according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of an exploded structure of a syringe holding apparatus according to embodiment 2 of the present invention;
FIG. 4 is an exploded view of a hinge assembly in a syringe retaining device according to example 2 of the present invention;
fig. 5 is a schematic structural view of a fluid injection apparatus according to embodiment 3 of the present invention in a state;
FIG. 6 is a schematic view of a fluid injection apparatus according to embodiment 3 of the present invention in another state;
fig. 7 is a schematic structural view of a fluid injection apparatus provided in embodiment 4 of the present invention;
fig. 8 is a schematic sectional view of a fluid injection apparatus according to embodiment 3 or 4 of the present invention in a state;
fig. 9 is a schematic sectional view of a fluid injection apparatus according to embodiment 3 or 4 of the present invention in another state;
fig. 10 is a schematic structural view of a cylinder in a fluid injection apparatus according to embodiment 3 or 4 of the present invention.
In the figure: 1-fixed part, 101-first arc-shaped groove, 102-second arc-shaped groove, 103-first groove, 104-baffle plate, 2-locking device, 201-fixed baffle plate, 202-receiving part, 203-locking part, 204-notch, 205-arc-shaped supporting plate, 206-second groove, 207-first flange, 208-first opening, 209-handle, 210-positioning plate, 211-movable part, 212-handle, 213-hinge assembly, 214-guide rail plate, 215-second flange, 216-second opening, 217-hinge base, 218-hinge upper cover, 219-hinge lower cover, 220-pin shaft, 3-syringe, 301-injection part, 302-cylindrical body, 4-shell, 401-third opening, 402-drive piston, 403-first probe, 404-first spring, 405-syringe-in-position sensor, 406-second probe, 407-second spring, 408-syringe insertion sensor, 5-syringe shield, 6-support arm.
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.
Example 1:
as shown in fig. 1 and 2, the syringe retaining device comprises a fixing member 1 and a locking device 2 arranged on one side of the fixing member 1 and used for clamping an injection part 301 of a syringe 3, wherein the fixing member 1 and the locking device 2 are matched with each other to lock and unlock the syringe 3.
The locking device 2 comprises a fixed baffle 201, a receiving part 202 and a locking part 203, and the fixed part 1, the fixed baffle 201 and the locking part 203 are all circular rings; a first arc-shaped groove 101 and a second arc-shaped groove 102 for accommodating a circular locking piece 203 are formed in one side face of the circular fixing piece 1, the width of the first arc-shaped groove 101 is the same as that of the circular fixing piece 1, the second arc-shaped groove 102 is close to the center of the circular fixing piece 1, the depth of the second arc-shaped groove 102 is the same as that of the first arc-shaped groove 101, the second arc-shaped groove 102 is communicated with the first arc-shaped groove 101, and the width of the second arc-shaped groove 102 is smaller than or equal to that of the circular locking piece 203; the annular fixed baffle plate 201 is provided with a notch 204 corresponding to the first arc-shaped groove 101, one side surface of the annular fixed baffle plate 201 is provided with two arc-shaped supporting plates 205, the two arc-shaped supporting plates 205 are symmetrically and respectively arranged at two sides of the notch 204, the two arc-shaped supporting plates 205 are both arranged along the outer circumference of the annular fixed baffle plate 201, and the annular fixed baffle plate 201 is fixedly connected with the side surface of the annular fixed member 1 provided with the first arc-shaped groove 101 through the two arc-shaped supporting plates 205; the circular locking piece 203 is arranged in a space enclosed by the circular fixing piece 1, the circular fixing baffle 201 and the two arc-shaped supporting plates 205, and two side surfaces of the circular locking piece 203 are respectively contacted with the circular fixing piece 1 and the circular fixing baffle 201; two first grooves 103 are formed in the inner wall of the circular fixing member 1, the two first grooves 103 are symmetrically and respectively arranged at two ends of the first arc-shaped groove 101, and two second grooves 206 which are corresponding to and flush with the first grooves 103 are formed in the inner wall of the circular locking member 203; the receiving piece 202 is arranged in a space surrounded by the circular fixing piece 1, the circular locking piece 203 and the circular fixing baffle 201, two first flanges 207 which are respectively matched with the first groove 103 and the second groove 206 are arranged on the receiving piece 202, and a first opening 208 for clamping the injection part 301 of the syringe 3 is arranged on the receiving piece 202; a handle 209 is arranged on the circular locking piece 203, the handle 209 is arranged in the first arc-shaped groove 101 and extends out of the first arc-shaped groove 101, and a locating plate 210 is arranged at one end of the handle 209, which extends out of the first arc-shaped groove 101; when the access plate 210 is located at one end of the first arc-shaped groove 101 and the first groove 103 and the second groove 206 are located at the corresponding positions, the receiving member 202 unlocks the cylinder 3, and when the access plate 210 is located at the other end of the first arc-shaped groove 101 and the first groove 103 and the second groove 206 are located at the corresponding positions, the receiving member 202 locks the cylinder 3.
The specific working principle is as follows:
during installation, the circular locking piece 203 is rotated by the positioning plate 210, when the positioning plate 210 is rotated to one end of the first arc-shaped groove 101, and the first groove 103 on the circular fixing baffle plate 1 and the second groove 206 on the circular fixing baffle plate 201 are in corresponding positions, the receiving piece 202 enters a space surrounded by the circular fixing baffle plate 201, the circular locking piece 203 and the circular fixing piece 1 from the opening 204 on the circular fixing baffle plate 201, and then the receiving piece 202 is pressed downwards, so that the first flange 207 on the receiving piece 202 passes through the second groove 103 on the circular fixing baffle plate 201 and then is clamped into the first groove 103 on the circular fixing piece 1, meanwhile, the injection part 301 of the syringe 3 is clamped in the first opening 208 on the receiving piece 202, and then the circular locking piece 203 is rotated by the positioning plate 210, when the positioning plate 210 is rotated to the other end of the first arc-shaped groove 101, and the first groove 103 on the circular fixing piece 1 and the second groove 206 on the circular fixing baffle plate are in non-corresponding positions In this position, the receiver 202 locks the syringe 3.
During disassembly, the circular locking piece 203 is rotated by the positioning plate 210, when the positioning plate 210 rotates to one end of the first arc-shaped groove 101, and the first groove 103 on the circular fixing piece 1 and the second groove 206 on the circular fixing baffle 201 are located at corresponding positions, the receiving piece 202 unlocks the syringe 3, the receiving piece 202 is pulled upwards, the first flange 207 on the receiving piece 202 sequentially comes out of the first groove 103 on the circular fixing piece 1 and the second groove 103 on the circular fixing baffle 201, enters a space defined by the circular fixing baffle 201, the circular locking piece 203 and the circular fixing piece 1, the receiving piece 202 is pulled outwards, and the receiving piece 202 is pulled out of the notch 204 on the circular fixing baffle 201.
Example 2:
as shown in fig. 3 and 4, the syringe retaining device comprises a fixing member 1 and a locking device 2 arranged on one side of the fixing member 1 and used for clamping an injection part 301 of a syringe 3, wherein the fixing member 1 and the locking device 2 are matched with each other to lock and unlock the syringe 3.
The locking device 2 comprises a movable piece 211, a handle 212, a hinge assembly 213 and a guide rail plate 214, wherein the fixed piece 1 is in a circular ring shape, and the guide rail plate 214 is in a semi-circular ring shape; the hinge assembly 213 is fixedly connected with the circular fixing piece 1, the hinge assembly 213 is slidably connected with the semicircular annular guide rail plate 214, the semicircular annular guide rail plate 214 is fixedly connected with the movable piece 211, and the handle 212 is detachably connected with the movable piece 211; the movable piece 211 is arranged in the circular fixed piece 1, two second flanges 215 are symmetrically arranged on the movable piece 211, two baffle plates 104 matched with the second flanges 215 are symmetrically arranged on the inner wall of the circular fixed piece 1, and a second opening 216 used for clamping the injection part 301 of the needle cylinder 3 is arranged on the movable piece 211; the handle 212 drives the semicircular track plate 214 to slide along the hinge assembly 213 and simultaneously drives the movable piece 211 to rotate in the circular fixing piece 1, when the two second flanges 215 rotate to the two baffle plates 104, the movable piece 211 locks the needle cylinder 3, and when the two second flanges 215 rotate to be far away from the two baffle plates 104, the movable piece 211 unlocks the needle cylinder 3.
The hinge assembly 213 comprises a hinge base 217, a hinge upper cover 218 and a hinge lower cover 219, the hinge base 217 is fixedly connected with the fixing member 1, the hinge base 217 is hinged with the hinge lower cover 219 through a pin 220, the hinge lower cover 219 is fixedly connected with the hinge upper cover 218, the edge of the guide rail plate 214 is limited between the hinge lower cover 219 and the hinge upper cover 218, and the guide rail plate 214 is slidably connected with the hinge lower cover 219 and the hinge upper cover 218.
The movable piece 211 and the handle 212 are detachably connected through magnets or magnetic metal.
The specific working principle is as follows:
during installation, the lower cover 219 rotates clockwise around the pin 220 through the hinge, so that the movable member 211 enters the circular ring-shaped fixed member 1, meanwhile, the injection part 301 of the syringe 3 is clamped at the second opening 216 on the movable member 211, and then the handle 212 drives the semicircular annular guide rail plate 214 to slide relative to the hinge assembly 213 and simultaneously drives the movable member 211 to rotate in the circular ring-shaped fixed member 1, and when the second flange 215 on the movable member 211 rotates to the baffle 104 on the circular ring-shaped fixed member 1, the movable member 211 locks the syringe 3.
During disassembly, the handle 212 drives the semicircular guide rail plate 214 to slide relative to the hinge assembly 213 and simultaneously drives the movable piece 211 to rotate in the circular fixing piece 1, when the second flange 215 on the movable piece 211 rotates to a position far away from the baffle plate 104 on the circular fixing piece 1, the movable piece 211 unlocks the needle cylinder 3, and the hinge lower cover 219 rotates counterclockwise around the pin shaft 220 to enable the movable piece 211 to be far away from the circular fixing piece 1.
Example 3:
as shown in fig. 5, 6, 8, 9, 10, a fluid injection apparatus includes a syringe holding device of embodiment 1, a housing 4 and a syringe protective cover 5, the housing 4 is disposed opposite to the fixing member 1, at least one supporting arm 6 is disposed between the housing 4 and the fixing member 1, one end of the supporting arm 6 is fixedly connected to the housing 4, and the other end is fixedly connected to a side surface of the fixing member 1 away from the locking device 2; the syringe protective sleeve 5 is arranged in a space enclosed by the shell 4, the supporting arm 6 and the fixing piece 1, a third opening 401 is arranged on the shell 4, and one end of the syringe protective sleeve 5 is connected with the third opening 401 on the shell 4; the cylinder-shaped body 302 of the syringe is arranged in the syringe protective sleeve 5, and the injection part 301 of the syringe 3 sequentially passes through the fixing piece 1 and the locking device 2 and is clamped in the locking device 2; a driving piston 402 penetrates through a third opening 401 on the shell 4, the driving piston 402 extends into the cylindrical body 302 of the syringe 3 and drives the syringe plunger of the syringe 3 to move in the cylindrical body 302; the syringe retaining device is made of metal with high strength.
A first probe 403 is arranged in the supporting arm 6, a syringe in-place sensor 405 is arranged in the shell 4, a first spring 404 is sleeved on the first probe 403, one end, close to the syringe in-place sensor 405, of the first spring 404 is fixedly connected with the shell 4, the other end of the first spring is fixedly connected with the first probe 403, when the syringe 3 is mounted in place, the fixing piece 1 and the locking device 2 are matched with each other to lock the syringe 3, the locking device 2 extrudes the first probe 403, the first spring 404 on the first probe 403 is in a compressed state, and the first probe 403 triggers the syringe in-place sensor 405; the syringe-in-position sensor 405 is used to monitor whether the syringe 3 is mounted in position.
A second probe 406 and a syringe insertion sensor 408 are arranged in the housing 4, the second probe 406 is arranged at the third opening 401 on the housing 4, a second spring 407 is sleeved on the second probe 406, one end of the second spring 407 close to the syringe insertion sensor 408 is fixedly connected with the housing 4, the other end of the second spring 407 is fixedly connected with the second probe 406, when the syringe 3 is inserted into the syringe protective sleeve 5, the syringe 3 extrudes the second probe 406, the second spring 407 on the second probe 406 is in a compressed state, and the second probe 406 triggers the syringe insertion sensor 408; the syringe insertion sensor 408 is used to monitor whether the syringe 3 is inserted.
The syringe insertion sensor 408 and the syringe in-place sensor 405 can select sensors such as an optical coupler, a microswitch and an ultrasonic switch; the first spring 404 and the second spring 407 may each be selected from a compression spring, a tension spring, and the like.
The specific working principle is as follows:
during installation, the needle cylinder protective sleeve 5 sequentially penetrates through the circular fixing baffle 201, the circular locking piece 203 and the circular fixing piece 1 and then enters a space surrounded by the shell 4, the supporting arm 6 and the circular fixing piece 1, and one end of the needle cylinder protective sleeve 5 is connected with a third opening 401 of the shell 4; inserting the cylindrical body 302 of the syringe 3 into the syringe protective sheath 5, at the same time, the syringe 3 presses the second probe 406 in the housing 4, the second spring 407 on the second probe 406 is in a compressed state, and the second probe 406 triggers the syringe insertion sensor 405 in the housing; when the positioning plate 210 rotates the circular locking piece 203, when the positioning plate 210 rotates to one end of the first arc-shaped groove 101, and the first groove 103 on the circular fixing baffle plate 1 and the second groove 206 on the circular fixing baffle plate 201 are at corresponding positions, the receiving piece 202 enters a space surrounded by the circular fixing baffle plate 201, the circular locking piece 203 and the circular fixing piece 1 through the opening 204 on the circular fixing baffle plate 201, and then the receiving piece 202 is pressed downwards, so that the first flange 207 on the receiving piece 202 passes through the second groove 103 on the circular fixing baffle plate 201 and then is clamped into the first groove 103 on the circular fixing piece 1, meanwhile, the injection part 301 of the syringe 3 is clamped in the first opening 208 on the receiving piece 202, and then the positioning plate 210 rotates the circular locking piece 203, when the positioning plate 210 rotates to the other end of the first arc-shaped groove 101, and the first groove 103 on the circular fixing baffle plate 1 and the second groove 206 on the circular fixing baffle plate 201 are at different positions, the receiver 202 locks the syringe 3, the syringe 3 is mounted in position, the access plate 210 presses the first probe 403 in the support arm 6, the first spring 404 on the first probe 403 is in compression, and the first probe 403 triggers the syringe access sensor 405 in the housing 4.
When the needle cylinder is disassembled, the circular locking piece 203 is rotated by the positioning plate 210, when the positioning plate 210 is rotated to one end of the first arc-shaped groove 101, and the first groove 103 on the circular fixing piece 1 and the second groove 206 on the circular fixing baffle 201 are in corresponding positions, the receiving piece 202 unlocks the needle cylinder 3, the receiving piece 202 is pulled upwards, the first flange 207 on the receiving piece 202 sequentially comes out of the first groove 103 on the circular fixing piece 1 and the second groove 103 on the circular fixing baffle 201, enters a space surrounded by the circular fixing baffle 201, the circular locking piece 203 and the circular fixing piece 1, the receiving piece 202 is pulled outwards, the receiving piece 202 is pulled out from the notch 204 on the circular fixing baffle 201, meanwhile, the first probe 403 in the supporting arm 6 is far away from the needle cylinder in-position sensor 405 in the shell 4 under the action of the first spring 404, and then the needle cylinder 3 is taken out, at the same time the second probe 405 inside the housing 4 is inserted by the second spring 407 away from the syringe inside the housing into the sensor 408, and finally the syringe jacket 5 is removed again.
Example 4:
as shown in fig. 7, 8, 9, 10, a fluid injection apparatus comprises a syringe holding device of embodiment 2, a housing 4 and a syringe cover 5, wherein the housing 4 is disposed opposite to the fixing member 1, at least one support arm 6 is disposed between the housing 4 and the fixing member 1, one end of the support arm 6 is fixedly connected to the housing 4, and the other end is fixedly connected to a side surface of the fixing member 1 away from the locking device 2; the syringe protective sleeve 5 is arranged in a space enclosed by the shell 4, the supporting arm 6 and the fixing piece 1, a third opening 401 is arranged on the shell 4, and one end of the syringe protective sleeve 5 is connected with the third opening 401 on the shell 4; the cylinder-shaped body 302 of the syringe is arranged in the syringe protective sleeve 5, and the injection part 301 of the syringe 3 sequentially passes through the fixing piece 1 and the locking device 2 and is clamped in the locking device 2; a driving piston 402 penetrates through a third opening 401 on the shell 4, the driving piston 402 extends into the cylindrical body 302 of the syringe 3 and drives the syringe plunger of the syringe 3 to move in the cylindrical body 302; the syringe retaining device is made of metal with high strength.
A first probe 403 is arranged in the supporting arm 6, a syringe in-place sensor 405 is arranged in the shell 4, a first spring 404 is sleeved on the first probe 403, one end, close to the syringe in-place sensor 405, of the first spring 404 is fixedly connected with the shell 4, the other end of the first spring is fixedly connected with the first probe 403, when the syringe 3 is mounted in place, the fixing piece 1 and the locking device 2 are matched with each other to lock the syringe 3, the locking device 2 extrudes the first probe 403, the first spring 404 on the first probe 403 is in a compressed state, and the first probe 403 triggers the syringe in-place sensor 405; the syringe-in-position sensor 405 is used to monitor whether the syringe 3 is mounted in position.
A second probe 406 and a syringe insertion sensor 408 are arranged in the housing 4, the second probe 406 is arranged at the third opening 401 on the housing 4, a second spring 407 is sleeved on the second probe 406, one end of the second spring 407 close to the syringe insertion sensor 408 is fixedly connected with the housing 4, the other end of the second spring 407 is fixedly connected with the second probe 406, when the syringe 3 is inserted into the syringe protective sleeve 5, the syringe 3 extrudes the second probe 406, the second spring 407 on the second probe 406 is in a compressed state, and the second probe 406 triggers the syringe insertion sensor 408; the syringe insertion sensor 408 is used to monitor whether the syringe 3 is inserted.
The syringe insertion sensor 408 and the syringe in-place sensor 405 can select sensors such as an optical coupler, a microswitch and an ultrasonic switch; the first spring 404 and the second spring 407 may each be selected from a compression spring, a tension spring, and the like.
The specific working principle is as follows:
during installation, the needle cylinder protective sleeve 5 penetrates through the circular fixing piece 1 and then enters a space enclosed by the shell 4, the supporting arm 6 and the circular fixing piece 1, and one end of the needle cylinder protective sleeve 5 is connected with a third opening 401 of the shell 4; inserting the circular ring-shaped body 302 of the syringe 3 into the syringe protective sleeve 5, simultaneously, the syringe 3 presses the second probe 406 in the housing 4, the second spring 407 on the second probe 406 is in a compressed state, and the second probe 406 triggers the syringe insertion sensor 408 in the housing 4; the lower cover 219 rotates clockwise around the pin 220 through the hinge, so that the movable part 211 enters the circular fixing element 1, meanwhile, the injection part 301 of the syringe 3 is clamped at the second opening 216 on the movable part 211, and then the handle 212 drives the semicircular guide rail plate 214 to slide relative to the hinge assembly 213 and simultaneously drives the movable part 211 to rotate in the circular fixing element 1, when the second flange 215 on the movable part 211 rotates to the baffle 104 on the circular fixing element 1, the movable part 211 locks the syringe 3, the syringe 3 is installed in place, meanwhile, the semicircular guide rail plate 214 extrudes the first probe 403 in the support arm 6, the first spring 404 on the first probe 403 is in a compressed state, and the first probe 403 triggers the syringe in-place sensor 405 in the housing 4.
When the needle cylinder protective sleeve is detached, the handle 212 drives the semicircular annular guide rail plate 214 to slide relative to the hinge assembly 213 and simultaneously drives the movable piece 211 to rotate in the annular fixing piece 1, when the second flange 215 on the movable piece 211 rotates to a position far away from the baffle plate 104 on the annular fixing piece 1, the movable piece 211 unlocks the needle cylinder 3, the lower cover 219 of the hinge rotates anticlockwise around the pin shaft 220, the movable piece 211 is far away from the annular fixing piece 1, meanwhile, the first probe 403 in the supporting arm 6 is far away from the needle cylinder in-place sensor 405 in the shell 4 under the action of the first spring 404, the needle cylinder 3 is taken out, meanwhile, the second probe 405 in the shell 4 is far away from the needle cylinder in-place sensor 408 in the shell under the action of the second spring 407, and finally, the needle cylinder protective sleeve 5 is taken out.
The syringe holding device and the fluid injection device provided by the invention are suitable for tomography equipment, nuclear magnetic resonance equipment, digital subtraction angiography equipment and the like, can avoid pollution to the sterile environment of the operation, and can improve the experience of a user and save the installation time of the user; the invention solves the problems of sterility, convenience and safety of the needle cylinder 3 in the processes of installation, fixation and disassembly.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A syringe retaining device characterized by: including mounting (1) and set up in mounting (1) one side and be used for joint cylinder (3) injection part (301) locking device (2), mutually support between mounting (1) and locking device (2) and can realize locking and unblock to cylinder (3).
2. A syringe retaining device according to claim 1, wherein: the locking device (2) comprises a fixed baffle (201), a receiving part (202) and a locking part (203), and the fixed part (1), the fixed baffle (201) and the locking part (203) are all circular rings; a first arc-shaped groove (101) and a second arc-shaped groove (102) which are used for containing a circular locking piece (203) are formed in one side face of the circular fixing piece (1), the width value of the first arc-shaped groove (101) is the same as that of the circular fixing piece (1), the second arc-shaped groove (102) is close to the center of the circular fixing piece (1), the depth value of the second arc-shaped groove (102) is the same as that of the first arc-shaped groove (101), the second arc-shaped groove (102) is communicated with the first arc-shaped groove (101), and the width value of the second arc-shaped groove (102) is smaller than or equal to that of the circular locking piece (203); the circular fixing baffle (201) is provided with a notch (204) corresponding to the first arc-shaped groove (101), one side face of the circular fixing baffle (201) is provided with two arc-shaped supporting plates (205), the two arc-shaped supporting plates (205) are symmetrically and respectively arranged at two sides of the notch (204), the two arc-shaped supporting plates (205) are arranged along the outer circumference of the circular fixing baffle (201), and the circular fixing baffle (201) is fixedly connected with the side face of the circular fixing piece (1) provided with the first arc-shaped groove (101) through the two arc-shaped supporting plates (205); the circular locking piece (203) is arranged in a space surrounded by the circular fixing piece (1), the circular fixing baffle (201) and the two arc-shaped supporting plates (205), and two side faces of the circular locking piece (203) are respectively contacted with the circular fixing piece (1) and the circular fixing baffle (201); two first grooves (103) are formed in the inner wall of the circular fixing piece (1), the two first grooves (103) are symmetrically and respectively arranged at two ends of the first arc-shaped groove (101), and two second grooves (206) which correspond to and are flush with the first grooves (103) are formed in the inner wall of the circular locking piece (203); the receiving piece (202) is arranged in a space surrounded by the circular fixing piece (1), the circular locking piece (203) and the circular fixing baffle (201), two first flanges (207) which are respectively matched with the first groove (103) and the second groove (206) are arranged on the receiving piece (202), and a first opening (208) used for clamping an injection part (301) of the needle cylinder (3) is arranged on the receiving piece (202); a handle (209) is arranged on the circular locking piece (203), the handle (209) is arranged in the first arc-shaped groove (101) and extends out of the first arc-shaped groove (101), and a positioning plate (210) is arranged at one end, extending out of the first arc-shaped groove (101), of the handle (209); when the arrival plate (210) is positioned at one end of the first arc-shaped groove (101), and the first groove (103) and the second groove (206) are positioned correspondingly, the receiving piece (202) unlocks the needle cylinder (3), and when the arrival plate (210) is positioned at the other end of the first arc-shaped groove (101), and the first groove (103) and the second groove (206) are positioned non-correspondingly, the receiving piece (202) locks the needle cylinder (3).
3. A syringe retaining device according to claim 1, wherein: the locking device (2) comprises a movable piece (211), a handle (212), a hinge assembly (213) and a guide rail plate (214), the fixed piece (1) is in a circular ring shape, and the guide rail plate (214) is in a semi-circular ring shape; the hinge assembly (213) is fixedly connected with the circular fixing piece (1), the hinge assembly (213) is slidably connected with the semicircular annular guide rail plate (214), the semicircular annular guide rail plate (214) is fixedly connected with the movable piece (211), and the handle (212) is detachably connected with the movable piece (211); the movable piece (211) is arranged in the circular ring-shaped fixed piece (1), two second flanges (215) are symmetrically arranged on the movable piece (211), two baffle plates (104) matched with the second flanges (215) are symmetrically arranged on the inner wall of the circular ring-shaped fixed piece (1), and a second opening (216) used for clamping and connecting the injection part (301) of the needle cylinder (3) is arranged on the movable piece (211); the handle (212) drives the semicircular annular guide rail plate (214) to slide along the hinge assembly (213) and simultaneously drives the movable piece (211) to rotate in the circular annular fixed piece (1), when the two second flanges (215) rotate to the positions of the two baffle plates (104), the movable piece (211) locks the needle cylinder (3), and when the two second flanges (215) rotate to the positions far away from the two baffle plates (104), the movable piece (211) unlocks the needle cylinder (3).
4. A syringe retaining device according to claim 3, wherein: the hinge assembly (213) comprises a hinge seat (217), an upper hinge cover (218) and a lower hinge cover (219), the hinge seat (217) is fixedly connected with the fixing piece (1), the hinge seat (217) is hinged with the lower hinge cover (219) through a pin shaft (220), the lower hinge cover (219) is fixedly connected with the upper hinge cover (218), the edge of the guide rail plate (214) is limited between the lower hinge cover (219) and the upper hinge cover (218), and the guide rail plate (214) is slidably connected with the lower hinge cover (219) and the upper hinge cover (218).
5. A syringe retaining device according to claim 3, wherein: the movable piece (211) is detachably connected with the handle (212) through magnets or magnetic metal.
6. A fluid injection apparatus, characterized by: comprises the needle cylinder retaining device, a shell (4) and a needle cylinder protective sleeve (5) according to any one of claims 1 to 5, wherein the shell (4) is arranged opposite to the fixing piece (1), at least one supporting arm (6) is arranged between the shell (4) and the fixing piece (1), one end of the supporting arm (6) is fixedly connected with the shell (4), and the other end of the supporting arm is fixedly connected with one side surface of the fixing piece (1) far away from the locking device (2); the needle cylinder protective sleeve (5) is arranged in a space enclosed by the shell (4), the supporting arm (6) and the fixing piece (1), a third opening (401) is formed in the shell (4), and one end of the needle cylinder protective sleeve (5) is connected with the third opening (401) in the shell (4); the cylinder-shaped body (302) of the needle cylinder is arranged in the needle cylinder protective sleeve (5), and the injection part (301) of the needle cylinder (3) sequentially penetrates through the fixing piece (1) and the locking device (2) and is clamped in the locking device (2); and a driving piston (402) penetrates through a third opening (401) in the shell (4), the driving piston (402) extends into the cylindrical body (302) of the needle cylinder (3) and drives the needle cylinder plunger of the needle cylinder (3) to move in the cylindrical body (302).
7. A fluid injection apparatus as defined in claim 6, wherein: be equipped with first probe (403) in support arm (6), be equipped with the cylinder sensor (405) that targets in place in casing (4), the cover is equipped with first spring (404) on first probe (403), first spring (404) are close to the one end and casing (4) fixed connection of cylinder sensor (405) that targets in place, and the other end and first probe (403) fixed connection, when cylinder (3) installation targets in place, mutually support between mounting (1) and locking device (2) and realize the lock to cylinder (3), locking device (2) extrusion first probe (403), first spring (404) on first probe (403) are in the compression state, and first probe (403) trigger cylinder sensor (405) that targets in place.
8. A fluid injection apparatus as defined in claim 6, wherein: be equipped with second probe (406) and cylinder in casing (4) and insert sensor (408), second probe (406) sets up third opening (401) department on casing (4), the cover is equipped with second spring (407) on second probe (406), second spring (407) are close to cylinder and insert sensor (408) one end and casing (4) fixed connection, the other end and second probe (406) fixed connection, and when cylinder (3) inserted in cylinder protective sheath (5), cylinder (3) extrusion second probe (406), second spring (407) on second probe (406) are in the compression state, and second probe (406) trigger cylinder and insert sensor (408).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110423677.6A CN113230485B (en) | 2021-04-20 | 2021-04-20 | Syringe retaining device and fluid injection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110423677.6A CN113230485B (en) | 2021-04-20 | 2021-04-20 | Syringe retaining device and fluid injection device |
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| CN113230485A true CN113230485A (en) | 2021-08-10 |
| CN113230485B CN113230485B (en) | 2022-08-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113476681A (en) * | 2021-08-13 | 2021-10-08 | 深圳瑞格泰科医疗科技有限公司 | DSA high-pressure injector and needle cylinder dismounting mechanism thereof |
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| US20060184124A1 (en) * | 2005-01-21 | 2006-08-17 | Cowan Kevin P | Injectors, injector systems and methods for injecting fluids |
| US20190009935A1 (en) * | 2015-12-30 | 2019-01-10 | Baxter Corporation Englewood | Syringe positioning apparatus and method |
| CN207384559U (en) * | 2017-03-18 | 2018-05-22 | 江苏亚光医疗器械有限公司 | A kind of high-pressure contrast syringe |
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| CN113476681A (en) * | 2021-08-13 | 2021-10-08 | 深圳瑞格泰科医疗科技有限公司 | DSA high-pressure injector and needle cylinder dismounting mechanism thereof |
| CN113476681B (en) * | 2021-08-13 | 2022-09-09 | 深圳瑞格泰科医疗科技有限公司 | DSA high-pressure injector and needle cylinder dismounting mechanism thereof |
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| CN113230485B (en) | 2022-08-19 |
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