A syringe for wrapping a graft

Abstract

This invention provides a graft-encapsulating syringe, comprising: a syringe barrel; a piston rod, one end of which is disposed within the syringe barrel to form a piston and is movable relative to the syringe barrel along its length, the other end of which forms an operating end; an injection needle disposed on the syringe barrel, the injection needle including a needle body and a movable component at the end of the needle body for forming a needle tip, the needle body communicating with the syringe barrel cavity, the movable component consisting of multiple needle flaps rotatably connected to the needle body; and a drive mechanism disposed on the syringe barrel and electrically connected to the multiple needle flaps to drive the multiple needle flaps to unfold or snap together, the multiple needle flaps being snapped together to encapsulate the graft, and the medication in the syringe barrel cavity being delivered to the graft site through the needle body. The graft-encapsulating syringe provided by this invention can be applied in arthroscopic and other surgeries, achieving injection into the graft by encapsulating it.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a syringe that can encapsulate implants. Background Technology

[0002] The invention of the syringe was a revolutionary breakthrough in the field of medical devices. The process of drawing or injecting gas or liquid with a needle is called injection. A syringe consists of a syringe barrel with a small hole at the front end and a matching plunger. It is used to inject or extract small amounts of liquid into areas inaccessible by other methods. When the plunger is pulled out, the liquid or gas is drawn in through the small hole at the front end of the syringe barrel, and when the plunger is pushed in, the liquid or gas is expelled.

[0003] Although syringes have become a commonly used medical device in the medical field, frequently used to inject various medications into humans or animals, everyday syringes, such as those used in humans, can be used for subcutaneous, intramuscular, and intravenous injections. Using syringes for drug injection not only helps medical personnel to accurately control drug dosages but is also safe, reliable, relatively easy to operate, and yields significant beneficial effects.

[0004] However, in current applications, syringes are used to inject drugs into blood vessels by inserting the needle into the blood vessel. When this injection method is applied to arthroscopic surgery, the effect is not good and the implant cannot be effectively injected. Therefore, existing syringes are not suitable for scenarios such as arthroscopic surgery and cannot achieve effective injection into the joint cavity. Summary of the Invention

[0005] This invention provides a syringe that can be used in arthroscopic and other surgeries to inject grafts by encapsulating them.

[0006] To address the aforementioned technical problems, embodiments of the present invention provide a syringe capable of encapsulating a graft, comprising:

[0007] Syringe;

[0008] A piston rod has one end located inside the syringe to form a piston, and is capable of moving relative to the syringe along the length of the syringe. The other end of the piston rod forms an operating end.

[0009] An injection needle, disposed on the syringe, includes a needle body and a movable component at the end of the needle body for forming a needle tip. The needle body communicates with the cavity of the syringe. The movable component consists of multiple needle flaps rotatably connected to the needle body.

[0010] A driving mechanism is provided on the syringe and electrically connected to the plurality of needle flaps to drive the plurality of needle flaps to unfold or snap together. When the plurality of needle flaps snap together, they are used to wrap the graft. The liquid medicine in the syringe cavity is delivered to the graft through the needle body.

[0011] In some embodiments, the needle body has an infusion tube, one end of which is connected to the cylinder cavity and the other end is connected to a chamber formed by a plurality of needle flaps, and the medicine flows into the chamber through the infusion tube.

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

[0013] In some embodiments, a channel is provided inside the needle body, and the two ends of the channel are respectively connected to the cylindrical cavity and the chamber, forming the infusion tube.

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

[0015] In some embodiments, the channel is provided with a limiting structure and / or a stop structure, 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 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 by the rotation of the needle flap, thereby moving relative to the chamber.

[0017] In some embodiments, the rotating assembly includes two symmetrically arranged pins, and the driving mechanism includes a power supply, a switch, wires, and a magnetic component. The magnetic component is respectively disposed at the two pins. The wires are sequentially connected to the power supply, the switch, and the magnetic component. When the switch is in the open state, the two pins are attracted to each other and locked in place by the magnetic force between the magnetic components. When the switch is in the closed state, the magnetic component is affected by the current and changes its magnetism, causing the two pins to repel each other and open in place by the magnetic component.

[0018] In some embodiments, the magnetic component includes a first magnetic element and a second magnetic element, the first magnetic element and the second magnetic element are respectively disposed on the two needle petals, the first magnetic element and / or the second magnetic element are electromagnets, and are connected to the switch and the power supply in sequence through the wire;

[0019] The needle body has a wire passage, through which the wire connects the first magnetic component and / or the second magnetic component, as well as the power supply and switch.

[0020] In some embodiments, the needle flap 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 flap connected to the needle body is larger than the size of the second end opposite to each other, 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 understood that the beneficial effects of the embodiments of the present invention include: by configuring the syringe as including a syringe barrel, a piston rod, an injection needle, and a driving mechanism, and configuring the piston rod as having one end located inside the syringe barrel to form a piston and capable of moving relative to the syringe barrel along its length direction, and the other end forming an operating end; configuring the injection needle as including a needle body communicating with the syringe barrel cavity and a movable component at the end of the needle body consisting of multiple needle flaps respectively rotatably connected to the needle body to form a needle tip; and configuring the driving mechanism on the syringe barrel and electrically connected to the multiple needle flaps to drive the multiple needle flaps to unfold or snap together, medical personnel can drive the multiple needle flaps to snap together to wrap the graft by operating the driving mechanism, and then push the operating end to deliver the liquid medicine in the syringe barrel cavity through the needle body to the graft site, thereby achieving the wrapping injection of the graft, improving the precise injection effect of the graft, and at the same time playing a role in assisting the effective treatment of the lesion site, accelerating treatment and healing.

[0022] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0023] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a syringe capable of encapsulating implants according to an embodiment of the present invention.

[0026] Figure 2This is a partial structural diagram of the syringe capable of encapsulating implants in an embodiment of the present invention.

[0027] Figure label:

[0028] 1-Syringe; 2-Piston rod; 3-Injection needle; 4-Needle body; 5-Needle flap; 6-Infusion tubing; 7-Power supply; 8-Switch; 9-First magnetic component; 10-Second magnetic component. Detailed Implementation

[0029] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but these are not intended to limit the scope of the invention.

[0030] It should be understood that various modifications can be made to the embodiments disclosed herein. Therefore, the following description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope of this disclosure will be apparent to those skilled in the art.

[0031] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present disclosure and, together with the general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

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

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

[0034] The above and other aspects, features and advantages of this disclosure will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0035] Specific embodiments of the present disclosure are described thereafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure and can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the present disclosure. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of substantially any suitable detailed structures.

[0036] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in still another embodiment,” all of which may refer to one or more of the same or different embodiments according to this disclosure.

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

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

[0039] Syringe 1;

[0040] The piston rod 2 has one end located inside the syringe 1 to form a piston, and is able to move relative to the syringe 1 along the length direction of the syringe 1. The other end of the piston rod 2 forms an operating end.

[0041] An injection needle 3 is disposed on the syringe 1. The injection needle 3 includes a needle body 4 and a movable component at the end of the needle body 4 for forming a needle tip. The needle body 4 communicates with the cavity of the syringe 1. The movable component consists of multiple needle flaps 5, each rotatably connected to the needle body 4.

[0042] A driving mechanism is provided on the syringe 1 and electrically connected to the plurality of needle petals 5 to drive the plurality of needle petals 5 to unfold or snap together. When the plurality of needle petals 5 snap together, they are used to wrap the graft. The medicine in the syringe cavity is delivered to the graft through the needle body 4.

[0043] Based on the above embodiments, it can be understood that this embodiment configures the syringe to include a syringe barrel 1, a piston rod 2, an injection needle 3, and a drive mechanism. The piston rod 2 is configured such that one end is located inside the syringe barrel 1 to form a piston, capable of moving relative to the syringe barrel 1 along its length, and the other end forms an operating end. The injection needle 3 is configured to include a needle body 4 communicating with the cavity of the syringe barrel 1 and a movable component consisting of multiple needle flaps 5 rotatably connected to the needle body 4 at the end of the needle body 4 to form a needle tip. The drive mechanism is located on the syringe barrel 1 and electrically connected to the multiple needle flaps 5 to drive the multiple needle flaps 5 to unfold or snap together. This allows medical personnel to operate the drive mechanism to drive the multiple needle flaps 5 to snap together to wrap the graft. Then, by pushing the operating end, the liquid medicine in the cavity is delivered to the graft site through the needle body 4, achieving a wrapping injection of the graft, improving the precision of the injection, and simultaneously assisting in the effective treatment of the lesion, accelerating treatment and healing. For example, local injection of drugs or liquids can be used to reconstruct ligaments to promote the healing of the reconstructed ligaments, tendons, and bones.

[0044] In one embodiment, such as Figure 2As shown, multiple needle flaps 5 interlock to form a closed cavity enclosing the graft. The needle body 4 is a solid structure. To facilitate drug delivery from the cylindrical cavity to the needle body 4 and needle tip, the needle body 4 contains an infusion tube 6. The number of infusion tubes 6 is variable; there can be one or more. One end of the infusion tube 6 communicates with the cylindrical cavity, and the other end communicates with the cavity formed by the multiple needle flaps 5. The drug solution in the cylindrical cavity is pushed into the infusion tube 6 in the needle body 4 by the piston rod 2, and then flows through the infusion tube 6 into the cavity, completing the injection of the graft enclosed in the cavity.

[0045] The connection 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. 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. Both ends of the infusion tube 6 are at least flush with both ends of the needle body 4. That is, one end of the infusion tube 6 is flush with the end of the needle body 4 connected to the syringe 1 and communicates with the syringe 1. The other end of the infusion tube 6 is flush with the end of the needle body 4 connected to the chamber and communicates with the chamber.

[0046] In another embodiment, the needle body 4 is a hollow structure with a channel tube fixedly inserted inside. The channel tube is fixedly connected to the inner wall of the corresponding needle body 4. Alternatively, 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 respectively connected to the cylindrical cavity and the chamber, and the infusion tube 6 is formed by the channel tube.

[0047] Alternatively, in another embodiment, the needle body 4 is a solid structure with multiple channels inside, the channels being formed in the same or similar manner as the channel holes described above. Each channel connects to a cylindrical cavity and a chamber at both ends, and the infusion tube 6, made of a flexible material, passes through the channel.

[0048] To ensure a stable relative position between the infusion tube 6 and the channel, the channel in this embodiment is provided with a limiting structure and / or a stop structure. The limiting structure and stop structure are not fixed; for example, they may be, but are not limited to, limiting rings, stop rings, symmetrically arranged limiting protrusions, symmetrically arranged stop blocks, etc., all disposed within the channel. The infusion tube 6 is fixed within the corresponding channel by the limiting structure and / or stop structure and can move within a specified range along the length of the channel. That is, the infusion tube 6 can move axially within the channel.

[0049] Specifically, in this embodiment, the 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 portion of the infusion tube 6 located inside the chamber can be configured to match the shape of the needle flap 5, so that the portion of the infusion tube 6 located inside the chamber can abut against the inner wall of the needle flap 5. Additionally, a clamp or other limiting structure can be provided inside the needle flap 5 to further limit the portion of the infusion tube 6 located inside the chamber onto 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 influence of the needle flap 5, thereby avoiding obstruction of the movement of the needle flap 5.

[0050] In practical applications, multiple infusion tubes 6 can be set in this embodiment, such as one or multiple rings around the cavity. When the infusion tubes 6 are set according to the method of this embodiment, the medicine can be injected into the graft wrapped by the cavity from all sides, further improving the injection effect.

[0051] Of course, the needle body 4 can also be made into a hollow structure, and a connecting channel can be opened in the side wall of the needle body 4 and the side wall of the needle petal 5, and a flexible infusion tube 6 can be inserted in it. This is equivalent to embedding the infusion tube 6 in the side wall of the needle body 4 and the needle petal 5, so that the medicine can not only be injected into the graft through the central area, but also injected into the graft from the circumference of the chamber, effectively achieving full injection of the graft.

[0052] Continue to combine Figure 1 and Figure 2 As shown, in the illustrated embodiment, the rotating assembly includes two symmetrically arranged needle petals 5. The needle petals 5 and the needle body 4 can be connected by any method that provides good sealing and enables rotational connection, such as a shaft connection, or the needle petals 5 and the needle body 4 can be connected by shape memory metal, etc., whichever is more specific.

[0053] The needle petal 5 is arc-shaped and has a first end and a second end. The size of the first end of the needle petal 5 connected to the needle body 4 is larger than the size of the second end, and the size of the needle petal 5 changes gradually between the first end and the second end. In this embodiment, the two needle petals 5 can cooperate to form a teardrop-shaped three-dimensional structure, or they can form other forms of three-dimensional structures, such as an elliptical sphere, etc.

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

[0055] Furthermore, the driving mechanism includes a power supply 7, a switch 8, wires, and magnetic components. The magnetic components are respectively disposed at the two pin segments 5, and the wires are sequentially connected to the power supply 7, the switch 8, and the magnetic components. When the switch 8 is in the open state, the two pin segments 5 are attracted to each other and locked in a snap-fit ​​state by the magnetic force between the magnetic components. When the switch 8 is in the closed state, the magnetic components are affected by the current and change their magnetism, causing the two pin segments 5 to repel each other and open in a snap-fit ​​state by the magnetic components.

[0056] Specifically, in this embodiment, the magnetic components include a first magnetic element 9 and a second magnetic element 10. The first magnetic element 9 and the second magnetic element 10 are respectively disposed on the two needle petals 5. Specifically, they can be disposed on the outer wall of the needle petal 5, on the inner wall of the needle petal 5, or embedded in the needle petal 5; the specific arrangement is not unique. The first magnetic element 9 and / or the second magnetic element 10 are electromagnets and are connected to the switch 8 and the power supply 7 in sequence through the wires. To facilitate the wiring, in this embodiment, a wire passage is opened in the needle body 4, or simultaneously in the needle petal 5. The power supply 7 and the switch 8 are disposed together on the syringe 1; specifically, they can be combined to save space. The wires led out from the power supply 7 extend into the wire passage and are led out from the wire passage to connect to the corresponding magnetic element. The specific arrangement and direction of the wire passage are not fixed and need to be determined according to the actual placement position of the magnetic element.

[0057] In practice, medical personnel can remove the injection needle 3, draw the medication into the syringe 1 by operating the piston rod 2, then insert the injection needle 3 into the syringe 1 and insert it into the graft site. Pressing the switch 8 controls the power supply 7 to supply power to the electromagnet, changing its magnetism and creating a repulsive force with the opposing magnetic component, causing the two needle flaps 5 to open. Releasing the switch 8 restores the electromagnet to its original magnetism, causing it to attract the opposing magnetic component. The two needle flaps 5 then attract each other and lock together, encapsulating the graft. Finally, pushing the piston rod 2 allows the medication to be injected into the graft through the infusion tube 6.

[0058] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A syringe capable of encapsulating a graft, characterized in that, include: Syringe; A piston rod has one end located inside the syringe to form a piston, and is capable of moving relative to the syringe along the length of the syringe. The other end of the piston rod forms an operating end. An injection needle is disposed on the syringe. The injection needle includes a needle body and a movable component at the end of the needle body for forming a needle tip. The needle body is connected to the cavity of the syringe. The movable component is composed of multiple needle flaps that are rotatably connected to the needle body. as well as A driving mechanism, including a magnetic component and a switch, is disposed on the syringe and electrically connected to the plurality of needle flaps to drive the plurality of needle flaps to unfold or snap together. When the plurality of needle flaps snap together, they are used to wrap the graft. The liquid medicine in the syringe cavity is delivered to the graft site through the needle body. The magnetic components are respectively disposed at the two needle petals. When the switch is in the open state, the two needle petals are attracted to each other and locked together by the magnetic force between the magnetic components. When the switch is in the closed state, the magnetic components are affected by the current and change their magnetism, so that the two needle petals are repelled by each other and opened.

2. The syringe capable of encapsulating implants according to claim 1, characterized in that, The needle body has an infusion tube, one end of which is connected to the cylinder cavity, and the other end is connected to a chamber formed by multiple needle flaps. The medicine flows into the chamber through the infusion tube.

3. The syringe capable of encapsulating implants according to claim 2, characterized in that, The infusion tubing is integrally formed with the needle body, and both ends of the infusion tubing are at least flush with both ends of the needle body.

4. The syringe capable of encapsulating implants according to claim 3, characterized in that, The needle body has a channel, the two ends of which are connected to the cylindrical cavity and the chamber, respectively, and the channel forms the infusion tube.

5. The syringe capable of encapsulating a graft according to claim 2, characterized in that, The needle body has a channel, the two ends of which are connected to the cylindrical cavity and the chamber, respectively. The infusion tube is inserted through the channel and is made of flexible material.

6. The syringe capable of encapsulating a graft according to claim 5, characterized in that, The channel is provided with a limiting structure and / or a stop structure. 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 of the channel.

7. The syringe capable of encapsulating a graft according to claim 6, characterized in that, The end of the infusion tube facing the chamber extends into the chamber along the inner wall of the needle valve and can be driven by the rotation of the needle valve, thereby moving relative to the chamber.

8. The syringe capable of encapsulating a graft according to claim 1, characterized in that, The rotating assembly includes two symmetrically arranged needle petals, and the driving mechanism includes a power supply, a switch, wires, and a magnetic component. The magnetic component and the wires are sequentially connected to the power supply, the switch, and the magnetic component.

9. The syringe capable of encapsulating a graft according to claim 8, characterized in that, The magnetic component includes a first magnetic element and a second magnetic element. The first magnetic element and the second magnetic element are respectively disposed on the two needle petals. The first magnetic element and / or the second magnetic element are electromagnets and are connected to the switch and the power supply in sequence through the wires. The needle body has a wire passage, through which the wire connects the first magnetic component and / or the second magnetic component, as well as the power supply and switch.

10. The syringe capable of encapsulating a graft according to claim 1, characterized in that, The needle flap is arc-shaped and has a first end and a second end. The size of the first end of the needle flap connected to the needle body is larger than the size of the second end, and the size of the needle flap changes gradually between the first end and the second end.

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