Syringe capable of wrapping graft

Abstract

The embodiment of the invention provides an injector capable of wrapping a graft. The injector comprises a needle cylinder; one end of the piston rod is arranged in the needle cylinder to form a piston and can move relative to the needle cylinder in the length direction of the needle cylinder, and the other end of the piston rod forms an operation end; the injection needle is arranged on the needle cylinder, the injection needle comprises a needle body and a movable assembly which is arranged at the tail end of the needle body and used for forming a needle tip, the needle body is communicated with a cylinder cavity of the needle cylinder, and the movable assembly is composed of a plurality of needle flaps rotationally connected with the needle body; the driving mechanism is arranged on the needle cylinder and electrically connected with the needle flaps so as to drive the needle flaps to be unfolded or buckled, when the needle flaps are buckled, the needle flaps are used for wrapping a graft, and liquid medicine in the cylinder cavity is conveyed to the graft through the needle body. The syringe capable of wrapping the graft, provided by the embodiment of the invention, can be applied to operations such as arthroscopy and the like, and injection to the graft is realized in a manner of wrapping the graft.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of medical devices, and particularly to a syringe capable of wrapping a graft. Background Art

[0002] The appearance of the syringe is an epoch-making revolution in the field of medical instruments. The process of extracting, injecting gas or liquid with a needle is called injection. A syringe consists of a barrel with a small hole at the front end and a piston core rod that matches it, and is used to inject a small amount of liquid or gas into an area that cannot be reached by other methods or to extract it from those places. When the core rod is pulled out, the liquid or gas is sucked into the barrel through the small hole at the front end of the barrel, and when the core rod is pushed in, the liquid or gas is extruded.

[0003] Although the syringe has become a commonly used medical device in the medical field and is often used to inject various types of medicinal liquids into the human body or animal body. For example, when a commonly used syringe in daily life is applied to the human body, it can be suitable for subcutaneous, intramuscular, intravenous injection of medicinal liquids, etc. Injecting drugs through a syringe can not only help medical staff accurately control the drug dosage, but also be safe and reliable, and the operation is relatively simple, with significant beneficial effects.

[0004] However, in the current application scenarios, syringes are all used to inject drugs into blood vessels by inserting the needle into the blood vessels. When this injection method is applied to arthroscopic surgery, the effect is poor and the effective injection of implants cannot be achieved. Therefore, the existing syringes cannot be applied to scenarios such as arthroscopic surgery and cannot achieve effective injection into the joint cavity. Summary of the Invention

[0005] The embodiments of the present invention provide a syringe capable of wrapping a graft, which can be applied to surgeries such as arthroscopic surgery and realizes the injection into the graft by wrapping the graft.

[0006] To solve the above technical problems, the embodiments of the present invention provide a syringe capable of wrapping a graft, including:

[0007] A barrel;

[0008] A piston rod, one end of which is arranged inside the barrel to form a piston and can move relative to the barrel along the length direction of the barrel, and the other end of the piston rod forms an operating end;

[0009] An injection needle, arranged on the barrel, the injection needle includes a needle body and a movable component arranged at the end of the needle body for forming a needle tip, the needle body is communicated with the barrel cavity of the barrel, and the movable component is composed of a plurality of needle flaps respectively rotatably connected to the needle body; and

[0010] The drive mechanism is arranged on the syringe and is electrically connected to the plurality of needle petals to drive the plurality of needle petals to expand or close. When the plurality of needle petals are closed, they are used to wrap the graft, and the liquid medicine in the barrel cavity is transported to the graft through the needle body.

[0011] In some embodiments, the needle body has an infusion tube, one end of the infusion tube is connected to the barrel cavity, and the other end is connected to the chamber surrounded by the multiple needle petals, and the drug solution flows into the chamber through the infusion tube.

[0012] In some embodiments, the infusion tube and the needle body are integrally formed, and two ends of the infusion tube are at least flush with two ends of the needle body.

[0013] In some embodiments, a channel is opened in the needle body, and the two ends of the channel are connected to the barrel cavity and the chamber respectively, and the channel forms the infusion tube.

[0014] In some embodiments, a channel is opened in the needle body, and the two ends of the channel are connected to the barrel cavity and the chamber respectively. The infusion tube is passed through the channel, and the infusion tube is made of flexible material.

[0015] In some embodiments, a limiting structure and / or a stop structure is provided in the channel, and the infusion tube is fixed in the corresponding channel by the limiting structure and / or the stop structure, and can move within a specified range along the length direction of the channel.

[0016] In some embodiments, one end of the infusion tube facing the chamber extends into the chamber along the inner wall of the needle flap, and can be driven when the needle flap rotates, thereby moving relative to the chamber.

[0017] In some embodiments, the rotating component includes two symmetrically arranged needle petals, and the driving mechanism includes a power supply, a switch, an electric wire and a magnetic component. The magnetic components are respectively arranged at the two needle petals, and the electric wire is connected to the power supply, the switch and the magnetic component in sequence. When the switch is in an open state, the two needle petals are attracted to each other and are in a snap-fit state based on the magnetic force between the magnetic components. When the switch is in a closed state, the magnetic component is affected by the electric current and changes its magnetism, so that the two needle petals are repelled from each other and are in an open state based on the magnetic component.

[0018] In some embodiments, the magnetic assembly includes a first magnetic member and a second magnetic member, the first magnetic member and the second magnetic member are respectively arranged on the two needle petals, the first magnetic member and / or the second magnetic member are electromagnets, and are sequentially connected to the switch and the power supply through the wires;

[0019] A wire passing channel is formed inside the needle body, and the wire realizes the connection between the first magnetic member and / or the second magnetic member, the power supply, and the switch through the wire passing channel.

[0020] In some embodiments, the needle flap is arc-shaped and has opposite first and second ends. The size of the first end of the needle flap connected to the needle body is larger than that of the opposite second end, and the size of the needle flap between the first end and the second end changes in a gradual manner.

[0021] Based on the disclosure of the above embodiments, it can be known that the beneficial effects of the embodiments of the present invention include setting the syringe to include a syringe barrel, a piston rod, an injection needle, and a driving mechanism, setting the piston rod to form a piston at one end disposed inside the syringe barrel and capable of moving relative to the syringe barrel along the length direction of the syringe barrel, and forming an operation end at the other end. At the same time, the injection needle is set to include a needle body communicating with the barrel cavity of the syringe barrel and an active assembly disposed at the end of the needle body and composed of a plurality of needle flaps respectively rotatably connected to the needle body for forming a needle tip. In addition, the driving mechanism is disposed on the syringe barrel and electrically connected to the plurality of needle flaps to drive the plurality of needle flaps to unfold or buckle. In this way, medical staff can drive the plurality of needle flaps to buckle to wrap the graft by operating the driving mechanism, and then push the operation end to enable the liquid medicine in the barrel cavity to be delivered to the graft through the needle body, realizing the encapsulated injection of the graft, improving the precise injection effect on the graft, and at the same time playing an auxiliary role in the effective treatment of the lesion site, accelerating the treatment and healing.

[0022] Other features and advantages of the present application will be described in the subsequent description, and, in part, will be obvious from the description, or will be understood by implementing the present application. The objectives and other advantages of the present application can be achieved and obtained by the structures specifically pointed out in the written description, the claims, and the drawings.

[0023] The technical solutions of the present application will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings required for the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of the syringe capable of wrapping a graft in the embodiments of the present invention.

[0026] Figure 2This is a partial structural schematic diagram of the syringe for wrapping the graft in the embodiments of the present invention.

[0027] Reference numerals:

[0028] 1 - syringe barrel; 2 - piston rod; 3 - injection needle; 4 - needle body; 5 - needle flap; 6 - infusion tube; 7 - power supply; 8 - switch; 9 - first magnetic member; 10 - second magnetic member. Detailed implementation manners

[0029] Next, specific embodiments of the present invention will be described in detail with reference to the drawings, but this is not a limitation of the present invention.

[0030] It should be understood that various modifications can be made to the embodiments disclosed herein. Therefore, the following description should not be regarded as a limitation, but only as an example of the embodiments. Those skilled in the art will think of other modifications within the scope of the present disclosure.

[0031] The drawings included in the specification and constituting a part of the specification show embodiments of the present disclosure, and together with the general description of the present disclosure given above and the detailed description of the embodiments given below are used to explain the principles of the present disclosure.

[0032] These and other features of the present invention will become apparent from the following description of the preferred forms of the embodiments given by way of non - limiting examples with reference to the drawings.

[0033] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art can surely implement many other equivalent forms of the present invention, which have the features as described in the claims and thus are all within the protection scope defined thereby.

[0034] When combined with the drawings, the above - mentioned and other aspects, features, and advantages of the present disclosure will become more apparent in view of the following detailed description.

[0035] Hereinafter, specific embodiments of the present disclosure will be described with reference to the drawings; however, it should be understood that the disclosed embodiments are only examples of the present disclosure, and it can be implemented in various ways. Well - known and / or repetitive functions and structures are not described in detail to avoid unnecessary or redundant details from obscuring the present disclosure. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but only as a basis for the claims and a representative basis for teaching those skilled in the art to use the present disclosure in substantially any suitable detailed structure in a variety of ways.

[0036] This specification may use the phrase "in one embodiment", "in another embodiment", "in yet another embodiment", or "in other embodiments", which can all refer to one or more of the same or different embodiments according to the present disclosure.

[0037] Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0038] As Figure 1 shown, an embodiment of the present invention provides a syringe capable of wrapping a graft, including:

[0039] A syringe barrel 1;

[0040] A piston rod 2, one end of which is disposed inside the syringe barrel 1 to form a piston and is capable of moving relative to the syringe barrel 1 along the length direction of the syringe barrel 1, and the other end of the piston rod 2 forms an operation end;

[0041] An injection needle 3, disposed on the syringe barrel 1, the injection needle 3 includes a needle body 4 and a movable assembly disposed at the end of the needle body 4 for forming a needle tip, the needle body 4 is in communication with the barrel cavity of the syringe barrel 1, and the movable assembly is composed of a plurality of needle flaps 5 respectively rotatably connected to the needle body 4; and

[0042] A driving mechanism, disposed on the syringe barrel 1 and electrically connected to the plurality of needle flaps 5 to drive the plurality of needle flaps 5 to unfold or buckle, and when the plurality of needle flaps 5 are buckled, they are used to wrap the graft, and the liquid medicine in the barrel cavity is delivered to the graft through the needle body 4.

[0043] Based on the content of the above embodiment, it can be known that in this embodiment, the syringe is set to include a syringe barrel 1, a piston rod 2, an injection needle 3 and a driving mechanism, and the piston rod 2 is set such that one end is disposed inside the syringe barrel 1 to form a piston and is capable of moving relative to the syringe barrel 1 along the length direction of the syringe barrel 1, and the other end forms an operation end. At the same time, the injection needle 3 is set to include a needle body 4 in communication with the barrel cavity of the syringe barrel 1 and a movable assembly disposed at the end of the needle body 4 and composed of a plurality of needle flaps 5 respectively rotatably connected to the needle body 4 for forming a needle tip, and the driving mechanism is disposed on the syringe barrel 1 and electrically connected to the plurality of needle flaps 5 to drive the plurality of needle flaps 5 to unfold or buckle. In this way, medical staff can drive the plurality of needle flaps 5 to buckle to wrap the graft by operating the driving mechanism, and then push the operation end to make the liquid medicine in the barrel cavity pass through the needle body 4 and be delivered to the graft, realizing the wrapped injection of the graft, improving the precise injection effect on the graft, and at the same time playing an auxiliary role in the effective treatment of the lesion site, accelerating the treatment and healing. For example, injecting drugs or liquids locally for ligament reconstruction to promote the tendon-bone healing of the reconstructed ligament.

[0044] In one embodiment, as Figure 2As shown, the multiple needle petals 5 are interlocked with each other and can cooperate to form a closed chamber that encloses the transplant. The needle body 4 is a solid structure. In order to realize the transmission of the drug in the barrel cavity to the needle body 4 and the needle tip, the needle body 4 has an infusion tube 6. The number of the infusion tubes 6 is not fixed, and can be one or more. One end of the infusion tube 6 is connected to the barrel cavity, and the other end is connected to the chamber surrounded by the multiple needle petals 5. The drug liquid in the barrel cavity is sent into the infusion tube 6 in the needle body 4 by the push of the piston rod 2, and then flows into the chamber through the infusion tube 6 to complete the injection of the transplant wrapped in the chamber.

[0045] The connection form between the infusion tube 6 and the needle body 4 is not fixed. For example, in one embodiment, the infusion tube 6 and the needle body 4 are integrally formed, and the needle body 4 is made of metal, such as medical steel. The infusion tube 6 can be formed by opening a channel hole in the needle body 4. The two ends of the infusion tube 6 are at least flush with the two ends of the needle body 4, that is, one end of the infusion tube 6 is flush with the end connected to the needle body 4 and the syringe 1, and is connected to the syringe 1, and the other end of the infusion tube 6 is flush with the end connected to the needle body 4 and the chamber, and is connected to the chamber.

[0046] In another embodiment, the needle body 4 is a hollow structure, and a channel tube is fixedly arranged inside the needle body 4, and the channel tube is fixedly connected to the inner wall of the corresponding needle body 4, or the inner cavity of the needle body 4 can be divided into one or more channel tubes by setting a partition. The two ends of each channel tube are connected to the barrel cavity and the chamber respectively, and the infusion tube 6 is formed by the channel tube.

[0047] Alternatively, in another embodiment, the needle body 4 is a solid structure, and a plurality of channels are opened inside the needle body 4, and the opening form of the channels is the same or similar to the above-mentioned channel holes, etc. The two ends of each channel are connected to the barrel cavity and the chamber, respectively, and the infusion tube 6 is passed through the channel, and the infusion tube 6 is made of a flexible material.

[0048] In order to achieve the relative position stability between the infusion tube 6 and the channel, a limiting structure and / or a stopper structure are provided in the channel in this embodiment. The limiting structure and the stopper structure are not fixed, and can be, for example, but not limited to, a limiting ring, a stopper ring, a symmetrically arranged limiting protrusion, a symmetrically arranged stopper block, etc., provided in the channel. The infusion tube 6 is fixed in the corresponding channel through the limiting structure and / or the stopper structure, and can move within a specified range along the length direction of the channel. That is, the infusion tube 6 can move axially in the channel.

[0049] Specifically, in this embodiment, one end of the infusion tube 6 facing the chamber extends into the chamber along the inner wall of the needle flap 5. For example, the part of the infusion tube 6 located inside the chamber can be set in a structural form matching the outer shape of the needle flap 5, so that the part of the infusion tube 6 located inside the chamber can be attached to the inner wall of the needle flap 5. At the same time, a limiting structure such as a hoop can be arranged inside the needle flap 5 to further limit the part of the infusion tube 6 located inside the chamber on the needle flap 5. When the needle flap 5 is driven to rotate, the infusion tube 6 can move axially relative to the chamber and the needle body 4 under the drive of the needle flap 5, thus avoiding hindering the movement of the needle flap 5.

[0050] In practical applications, multiple infusion tubes 6 in this embodiment can be provided, such as arranged in a circle around the chamber or arranged in multiple circles. When arranging the infusion tube 6 based on the method of this embodiment, the liquid medicine can be injected into the graft wrapped by the chamber from all directions, further improving the injection effect.

[0051] Of course, the needle body 4 can also be set as a hollow structure. At the same time, a communicating channel is opened in the side wall of the needle body 4 and the side wall of the needle flap 5, and a flexible infusion tube 6 is passed through it. It is equivalent to embedding the infusion tube 6 in the side walls of the needle body 4 and the needle flap 5, so that the liquid medicine can not only be injected into the graft through the central area, but also be injected into the graft from the circumferential direction of the chamber, effectively realizing the full injection of the graft.

[0052] Continuing to combine Figure 1 and Figure 2 As shown, in the illustrated embodiment, the rotating assembly includes two symmetrically arranged needle flaps 5. The needle flap 5 and the needle body 4 can be connected in any way with good sealing performance and capable of realizing rotational connection, such as connected by a rotating shaft, etc. Or, the needle flap 5 and the needle body 4 can also be connected by shape memory metal, etc., which is not specifically limited.

[0053] The needle flap 5 is arc-shaped and has opposite first and second ends. The size of the first end of the needle flap 5 connected to the needle body 4 is larger than the size of the opposite second end, and the size of the needle flap 5 between the first end and the second end changes in a gradual manner. In this embodiment, the two needle flaps 5 can cooperate to form a three-dimensional structure in the shape of a water droplet, or can also form other forms of three-dimensional structures, such as a quasi-elliptical sphere, etc.

[0054] In practical applications, the inner diameter of the chamber can be but is not limited to any value in the range of 4 mm - 8 mm, the inner diameter of the infusion tube 6 can be but is not limited to 0.7 mm, and the diameter of the needle body 4 can be but is not limited to 4 mm, etc. The syringe barrel 1 is made of glass and is provided with scales on the surface. The piston rod 2 is made of plastic or glass, and a rubber sleeve is provided at one end of it located inside the syringe barrel 1. The injection needle 3 is detachably connected to the syringe barrel 1.

[0055] Further, the driving mechanism includes a power source 7, a switch 8, an electric wire, and a magnetic component. The magnetic component is respectively disposed in cooperation with the two needle flaps 5. The electric wire is sequentially connected to the power source 7, the switch 8, and the magnetic component. When the switch 8 is in the open state, the two needle flaps 5 are attracted to each other based on the magnetic force between the magnetic components and are in a buckled state. When the switch 8 is in the closed state, the magnetic component is affected by the current and changes its magnetism, so that the two needle flaps 5 are repelled from each other based on the magnetic component and are in an open state.

[0056] Specifically, in this embodiment, the magnetic component includes a first magnetic member 9 and a second magnetic member 10. The first magnetic member 9 and the second magnetic member 10 are respectively disposed on the two needle flaps 5, and specifically may be disposed on the outer wall of the needle flap 5, may also be disposed on the inner wall of the needle flap 5, or may be embedded in the needle flap 5. The specific arrangement is not unique. The first magnetic member 9 and / or the second magnetic member 10 is an electromagnet and is sequentially connected to the switch 8 and the power source 7 through the electric wire. For the convenience of wire layout, in this embodiment, a wire passing channel is provided in the needle body 4 or simultaneously in the needle flap 5. The power source 7 and the switch 8 are both arranged on the syringe barrel 1. Specifically, the two can be combined to save space. The wire led out from the power source 7 extends into the wire passing channel and is led out from the wire passing channel to be connected to the corresponding magnetic member. The specific setting direction of the wire passing channel is uncertain and needs to be determined according to the actual setting position of the magnetic member.

[0057] During actual operation, medical staff can remove the injection needle 3, suck the liquid medicine into the syringe barrel 1 by operating the piston rod 2, then install the injection needle 3 on the syringe barrel 1, and then insert it into the human body graft. Press the switch 8 to control the power source 7 to supply power to the electromagnet, so that it changes its magnetism and generates a repulsive force with the opposite magnetic member, causing the two needle flaps 5 to open. Then release the switch 8 to make the electromagnet return to its original magnetism, and then generate an attractive force with the opposite magnetic member. The two needle flaps 5 are attracted to each other through the attractive force and are in a buckled state to achieve the wrapping of the graft. Then push the piston rod 2 to inject the drug into the graft through the infusion tube 6.

[0058] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A syringe capable of wrapping a graft, characterized in that, include: Syringes; A piston rod, one end of which is disposed in the syringe to form a piston and is capable of moving relative to the syringe along the length direction of the syringe, and the other end of the piston rod forms an operating end; An injection needle is arranged on the syringe, the injection needle comprises a needle body and a movable assembly arranged at the end of the needle body for forming a needle tip, the needle body is communicated with the barrel cavity of the syringe, and the movable assembly is composed of a plurality of needle petals respectively connected to the needle body in rotation; as well as The drive mechanism is arranged on the syringe and is electrically connected to the plurality of needle petals to drive the plurality of needle petals to expand or close. When the plurality of needle petals are closed, they are used to wrap the graft, and the liquid medicine in the barrel cavity is transported to the graft through the needle body.

2. The syringe for wrapping a graft according to claim 1, characterized in that, The needle body is provided with an infusion tube, one end of which is communicated with the barrel cavity, and the other end of which is communicated with a cavity surrounded by a plurality of needle petals, and the drug solution flows into the cavity through the infusion tube.

3. The syringe for wrapping a graft according to claim 2, wherein The infusion tube and the needle body are integrally formed, and two ends of the infusion tube are at least flush with two ends of the needle body.

4. The syringe for wrapping a graft according to claim 3, characterized in that A channel is provided in the needle body, and two ends of the channel are connected to the barrel cavity and the chamber respectively, and the channel forms the infusion tube.

5. The syringe for wrapping a graft according to claim 2, characterized in that, A channel is provided in the needle body, and two ends of the channel are respectively connected to the barrel cavity and the chamber. The infusion tube is passed through the channel, and the infusion tube is made of flexible material.

6. The syringe for wrapping a graft according to claim 5, characterized in that, A limiting structure and / or a stop structure is provided in the channel, and the infusion tube is fixed in the corresponding channel by the limiting structure and / or the stop structure, and can move within a specified range along the length direction of the channel.

7. The syringe for wrapping a graft according to claim 6, characterized in that, One end of the infusion tube facing the cavity extends into the cavity along the inner wall of the needle flap, and can be driven when the needle flap rotates, thereby moving relative to the cavity.

8. The syringe for wrapping a graft according to claim 1, characterized in that, The rotating component includes two symmetrically arranged needle petals, and the driving mechanism includes a power supply, a switch, an electric wire and a magnetic component. The magnetic components are respectively arranged at the two needle petals, and the electric wire is connected to the power supply, the switch and the magnetic component in sequence. When the switch is in an open state, the two needle petals are attracted to each other and are in a snap-fit state based on the magnetic force between the magnetic components. When the switch is in a closed state, the magnetic component is affected by the electric current and changes its magnetism, so that the two needle petals are repelled from each other and are in an open state based on the magnetic component.

9. The syringe for wrapping a graft according to claim 8, characterized in that, The magnetic assembly includes a first magnetic member and a second magnetic member, the first magnetic member and the second magnetic member are respectively arranged on the two needle petals, the first magnetic member and / or the second magnetic member are electromagnets, and are sequentially connected to the switch and the power supply through the wires; The needle body is provided with a wire passage, and the wires are connected to the first magnetic member and / or the second magnetic member and the power source and the switch through the wire passage.

10. The syringe for wrapping a graft according to claim 1, characterized in that, The needle petal is arc-shaped and has a first end and a second end opposite to each other. The size of the first end of the needle petal connected to the needle body is larger than the size of the second end opposite to the needle petal, and the size of the needle petal between the first end and the second end changes in a gradual manner.

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