Hydrogel forming and conveying device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a hydrogel forming and conveying device which comprises a connector, an inner pipe, an outer pipe and an adjusting assembly. The connector is arranged at the end of the inner pipe and provided with a through hole allowing the inner pipe to stretch out. The inner tube is used for accommodating the hydrogel received by the interface; the outer pipe sleeves the outer surface of the side, away from the connector, of the inner pipe and is movably connected with the inner pipe, and the side, away from the connector, of the outer pipe is allowed to form a cavity with the inner pipe to serve as a hydrogel forming cavity; the adjusting assembly is connected with the inner pipe or the outer pipe and used for driving the inner pipe or the outer pipe to move so as to cancel the hydrogel forming cavity. While external curing forming of the hydrogel is realized, the cured and formed hydrogel is directly conveyed to an affected part, so that the clinical application of the hydrogel is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a hydrogel molding and conveying device. Background Art

[0002] Dry eye is a common and frequently occurring ophthalmic disease. Placing tear duct embolization to treat dry eye refers to placing tear duct plugs into the lacrimal puncta or tear ducts to achieve the purpose of embolization of the tear duct, reduce the discharge of tears from the tear duct, and increase the liquid content in the conjunctival sac. At the same time, enzymes in the tears will help repair ocular surface damage. With the continuous improvement of the level of clinical ophthalmic disease treatment in recent years, studies have shown that tear duct embolization is effective in treating mild tear deficiency dry eye, can improve the patient's clinical symptoms and signs, and is worthy of clinical promotion and application.

[0003] Anal fistula is a chronic infectious tube that connects the skin around the anus and the anal canal or rectum. It is a common benign anal disease, second only to hemorrhoids in incidence. Surgery is the main method for treating anal fistula. In the past, treatment methods such as anal fistulectomy and hanging thread therapy were often used. Although the lesions can be thoroughly cleaned, they will cause great trauma to the patient, easily prolong the patient's postoperative healing time, increase the patient's postoperative pain, and affect the patient's anal function to a certain extent. In recent years, with the continuous improvement of medical technology, anal fistula plug packing therapy has been increasingly widely used in the treatment of transsphincteric anal fistula, which not only transforms clinical treatment from surgical incision to filling repair, but also effectively protects the patient's anal function. Studies have shown that anal fistula plug packing therapy has a good protective effect on the patient's anal function.

[0004] Hydrogel is a composite composed of a large amount of water and a cross-linked polymer network. It is a soft, hydrophilic and biocompatible material that can highly fit the microenvironment of biological tissues, and is therefore widely used in tissue engineering and regenerative medicine. In recent years, the number of studies on the clinical application of hydrogel emboli made from hydrogels as raw materials has increased year by year. Hydrogel emboli can not only play a physical supporting and blocking role, but also be fixed in local drug loading to better exert the therapeutic effect of drugs, which makes hydrogel emboli used in the treatment of intra- and extra-corporeal cavities such as lacrimal ducts and postoperative holes / fistulas.

[0005] In summary, in order to cope with pore occlusion in different situations, it is crucial to design a hydrogel molding and delivery device that can be molded in vitro and further delivered. Utility Model Content

[0006] In order to solve the above problems, the purpose of the utility model is to provide a hydrogel molding and delivery device.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] The utility model provides a hydrogel forming and conveying device, which comprises an interface, an inner tube, an outer tube and an adjusting component;

[0009] The interface is arranged at the end of the inner tube and is provided with a through hole allowing the inner tube to extend out, and is used to receive the external hydrogel;

[0010] The inner tube is used to accommodate the hydrogel received by the interface;

[0011] The outer tube is sleeved on the outer surface of the inner tube away from the interface and is movably connected to the inner tube. The outer tube away from the interface is allowed to form a cavity with the inner tube as a hydrogel molding cavity.

[0012] The adjusting component is connected to the inner tube and is used to drive the inner tube to move toward a side away from the interface to cancel the cavity formed with the outer tube, thereby realizing the delivery of the hydrogel;

[0013] Alternatively, the regulating assembly is connected to the outer tube, and is used to drive the outer tube to move toward a side close to the interface to cancel the cavity formed with the inner tube, thereby achieving the transportation of the hydrogel.

[0014] In one embodiment of the utility model, the device further comprises a handle, which is hollow inside and accommodates the inner tube, the outer tube and the adjustment assembly, and is coaxially connected to the interface.

[0015] In one embodiment of the utility model, the device also includes a releaser, which is arranged on a handle. The handle is provided with a notch that allows the adjustment component to move along the axial direction of the inner tube. The releaser allows contact with the adjustment component through the notch to control the relative movement of the adjustment component between the outer tube and the inner tube.

[0016] In one embodiment of the present invention, the releaser is a first releaser, which includes a first releaser body, which is sleeved on the handle, and a pressing spring sheet that allows the first releaser to extend into the notch is provided on one side of the first releaser body close to the notch;

[0017] Alternatively, the releaser is a second releaser, the second releaser comprises a second releaser body, the second releaser body is movably connected to the handle, and the second releaser body is provided with a releaser protrusion that allows it to extend into the notch.

[0018] In one embodiment of the present utility model, when the releaser is a first releaser or a second releaser, the adjustment component is a first adjustment component;

[0019] The first adjustment assembly includes a first connector and a first spring, the first connector includes a first connector body,

[0020] The first connector body is sleeved on the outer side of the outer tube, and the first spring is arranged on the side of the first connector body away from the interface and sleeved on the outer side of the outer tube; or, the first connector body is sleeved on the outer side of the inner tube, and the first spring is arranged on the side of the first connector body close to the interface and sleeved on the outer side of the inner tube;

[0021] A connector protrusion abutting against the notch is arranged at the end of the first connector body away from the first spring; a connector notch allowing the connector protrusion to move downward is arranged at the lower side of the connector protrusion.

[0022] In one embodiment of the utility model, a limiting tube for limiting the moving distance of the first connector body is provided on a side of the first connector body away from the first spring;

[0023] The distance between the end of the limiting tube close to the first connector body and the end of the first connector body close to the limiting tube is greater than the length of the hydrogel molding cavity.

[0024] In one embodiment of the present utility model, the releaser is a third releaser, and the third releaser includes a third releaser body. The third releaser body is arranged at the notch, and the bottom is connected to the adjustment component.

[0025] In one embodiment of the present utility model, when the releaser is a third releaser, the adjustment component is a second adjustment component;

[0026] The second adjustment assembly includes a second connector and a second spring; the second connector includes a second connector body, the outer diameter of the second connector body is smaller than the inner diameter of the handle; a second inclined platform movably connected to the third releaser body is provided in the middle of the second connector body;

[0027] The second connector body is sleeved on the outside of the outer tube, and the second spring is arranged on a side of the second connector body close to the interface and sleeved on the outside of the inner tube;

[0028] Alternatively, the second connector body is sleeved on the outside of the inner tube, and the second spring is arranged on a side of the second connector body away from the interface and sleeved on the outside of the outer tube.

[0029] In one embodiment of the present utility model, the interface comprises an interface body and a Luer connector;

[0030] The interface body is provided with a through hole which runs through its length direction and is used to accommodate the inner tube; and a Luer connector is embedded in the end of the interface body away from the outer tube.

[0031] In one embodiment of the present utility model, a reset hole for controlling the reset of the adjustment component is provided on the interface body.

[0032] Compared with the prior art, the utility model has the following beneficial effects:

[0033] (1) The hydrogel forming and delivery device of the utility model fills the gap in the field of hydrogel forming and delivery devices, expands the application scope of hydrogel in clinical pore blocking and filling, and facilitates the promotion of hydrogel.

[0034] (2) In the hydrogel forming and delivery device of the present invention, the hydrogel can be formed in vitro by moving the outer tube relative to the inner tube and can be directly delivered to the affected area, making the clinical application of the hydrogel more convenient, reducing the operation time, improving the doctor's operation efficiency, and alleviating the patient's pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of the hydrogel forming and delivery device described in Example 1;

[0036] Figure 2 This is a schematic structural diagram of the hydrogel forming and delivery device described in Example 2;

[0037] Figure 3 This is a schematic structural diagram of the hydrogel forming and delivery device described in Example 3;

[0038] Figure 4 This is a schematic diagram of the state of the releaser in the hydrogel forming and delivery device described in Example 3;

[0039] Figure 5 This is a schematic diagram of the full cross-section structure of the hydrogel forming and delivery device described in Example 3;

[0040] Figure 6 This is a schematic structural diagram of the hydrogel forming and delivery device described in Example 4;

[0041] Figure 7 This is a schematic structural diagram of the hydrogel forming and delivery device described in Example 5;

[0042] Figure 8 This is a schematic structural diagram of the hydrogel forming and delivery device described in Example 6;

[0043] Fig. 9 is a schematic cross-sectional view of the hydrogel forming and delivery device described in Example 9;

[0044] Fig.10 It is a partial cross-sectional schematic diagram of the hydrogel forming and delivery device described in Example 9;

[0045] Fig.11 is a partial cross-sectional schematic diagram of the hydrogel forming and delivery device described in Example 10;

[0046] Numbers in the figure: 1. handle; 101. first interlocking section; 102. second interlocking section; 103. third interlocking section; 104. notch; 2. interface; 201. interface body; 202. reset hole; 203. Luer connector; 3. inner tube; 4. outer tube; 5. end cap; 601. first releaser body; 602. pressing spring; 603. second releaser body; 604. releaser protrusion; 701. first connector body; 702. connector notch; 703. connector protrusion; 8. first spring; 9. limiting tube; 1001. third releaser body; 1002. first ramp; 1101. second connector body; 1102. first groove; 1103. second groove; 1104. second ramp; 12. second spring; 13. hydrogel molding cavity; A adjustment component. DETAILED DESCRIPTION

[0047] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0051] Example 1

[0052] This embodiment provides a hydrogel forming and delivery device, such as Figure 1 As shown, it includes an interface 2, an inner tube 3, an outer tube 4 and an adjustment component A; the interface 2 is arranged at the end of the inner tube 3, and is provided with a through hole allowing the inner tube 3 to extend out, for receiving external hydrogel; the inner tube 3 is used to accommodate the hydrogel received by the interface 2; the outer tube 4 (the outer tube 4 can be fixed at any desired position to ensure that the outer tube 4 is fixed when the adjustment component A drives the inner tube 3 to move during use) is sleeved on the outer surface of the inner tube 3 away from the interface 2 and is movably connected with the inner tube 3, and the side of the outer tube 4 away from the interface 2 is allowed to form a cavity with the inner tube 3 as a hydrogel molding cavity 13; the adjustment component A is connected to the inner tube 3, and is used to drive the inner tube 3 to move toward the side away from the interface 2 to cancel the cavity formed with the outer tube 4, thereby realizing the transportation of the hydrogel.

[0053] When in use, the external hydrogel is injected into the inner tube 3 through the interface 2 until the hydrogel molding cavity 13 is filled, and the hydrogel is subjected to a certain treatment (for example, using a light source to irradiate the photosensitive hydrogel) to solidify it into shape;

[0054] The inner tube 3 is driven by the adjustment component A to move toward the side away from the interface 2, the hydrogel forming cavity 13 gradually disappears, and the solidified hydrogel escapes from the outer tube 4, thereby realizing the transportation of the hydrogel.

[0055] Example 2

[0056] This embodiment provides a hydrogel forming and delivery device, such as Figure 2 As shown, it includes an interface 2, an inner tube 3, an outer tube 4 and an adjustment component A; the interface 2 is arranged at the end of the inner tube 3, and is provided with a through hole allowing the inner tube 3 to extend out, for receiving external hydrogel; the inner tube 3 (the inner tube 3 can be fixed at any desired position, and it is sufficient to ensure that the inner tube 3 is fixed when the adjustment component A drives the outer tube 4 to move during use) is used to accommodate the hydrogel received by the interface 2; the outer tube 4 is sleeved on the outer surface of the inner tube 3 away from the interface 2 and is movably connected with the inner tube 3, and the side of the outer tube 4 away from the interface 2 is allowed to form a cavity with the inner tube 3, which serves as a hydrogel molding cavity 13; the adjustment component A is connected to the outer tube 4, and is used to drive the outer tube 4 to move toward the side close to the interface 2 to cancel the cavity formed with the inner tube 3, thereby realizing the transportation of the hydrogel.

[0057] When in use, the external hydrogel is injected into the inner tube 3 through the interface 2 until the hydrogel molding cavity 13 is filled, and the hydrogel is subjected to a certain treatment (for example, using a light source to irradiate the photosensitive hydrogel) to solidify it into shape;

[0058] The outer tube 4 is driven to move toward the side close to the interface 2 by the adjusting component A, the hydrogel forming cavity 13 gradually disappears, and the solidified hydrogel escapes from the outer tube 4, thereby realizing the transportation of the hydrogel.

[0059] Example 3

[0060] This embodiment provides a hydrogel forming and delivery device, such as Figure 3-5 As shown, it includes a handle 1, an interface 2, an inner tube 3, an outer tube 4, a releaser and an adjustment component; the handle 1 is hollow inside, and a notch 104 is provided on the outer surface thereof to match the releaser and the adjustment component; the handle 1 is coaxially connected to the interface 2 through a first engaging section 101, one end of the inner tube 3 is located in the interface 2, and is fixedly connected to the interface 2, extending to extend out of the handle 1; the adjustment component is provided in the inner cavity of the handle 1, is sleeved on the outer surfaces of the inner tube 3 and the outer tube 4, and is fixedly connected to the outer tube 4;

[0061] Among them, the interface 2 is used to receive the external hydrogel, the inner tube 3 is used to accommodate the hydrogel received by the interface 2, and the material of the inner tube 3 can be any biocompatible and opaque polymer or metal; the inner diameter of the outer tube 4 is 0.2mm-6mm, and is used to form or cancel the cavity formed with the inner tube 3. The material of the outer tube 4 is polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), polyimide (PI), nylon (PA), methyl methacrylate (PMMA), stainless steel (perforated), and any other biocompatible and light-transmissive polymer material or a metal that has been processed to be partially light-transmissive; the releaser is arranged on the handle 1, and is used to control the adjustment component; the adjustment component is used to drive the outer tube 4 to move relative to the inner tube 3.

[0062] The device has two states: hydrogel waiting to be formed and hydrogel delivery:

[0063] When the releaser is in a stationary state, the device is in a hydrogel waiting to be formed state, at which time the ends of the outer tube 4 and the inner tube 3 away from the interface 2 form a cavity, which is the hydrogel forming cavity 13; when the releaser is pressed down to the adjustment component to drive the outer tube 4 to move relative to the inner tube 3, the device is in a hydrogel conveying state, at which time the hydrogel forming cavity 13 disappears, allowing the hydrogel to be conveyed.

[0064] Furthermore, the interface 2 includes an interface body 201 and a Luer connector 203; the interface body 201 is provided with a through hole running through its length direction for accommodating the inner tube 3; the end of the interface body 201 away from the handle 1 is embedded with the Luer connector 203; the interface body 201 is also provided with a reset hole 202, which is connected to the inner cavity of the handle 1.

[0065] Furthermore, an end cap 5 is provided at the end of the handle 1 away from the interface 2, and is coaxially connected to the end cap 5 through a second interlocking section 102; the end cap 5 is provided with a through hole along its length direction to allow the outer tube 4 to extend out, and the outer diameter of the end cap 5 away from the handle 1 is smaller than the outer diameter of the end close to the handle 1.

[0066] Furthermore, the releaser in this embodiment is a first releaser, comprising a first releaser body 601, the first releaser body 601 is sleeved on the handle 1 through the third engaging section 103 of the handle 1, and a pressing spring 602 is provided on one side of the first releaser body 601 close to the notch 104;

[0067] Furthermore, the width of the pressing spring piece 602 is smaller than the width of the notch 104; when the pressing spring piece 602 is located directly above the notch 104, the pressing spring piece 602 is allowed to be pressed down to activate the adjustment component, so that the device is in a hydrogel delivery state.

[0068] Further, the adjustment component is a first adjustment component, including a first clip and a first spring 8; the first clip includes a first clip body 701, and a first clip section is provided on the side of the first clip body 701 close to the end cap 5, wherein the outer diameter of the first clip body 701 is smaller than the inner diameter of the handle 1 (allowing the movement of the first clip body 701), and the outer diameter of the first clip section is smaller than the outer diameter of the first clip body 701; the first spring 8 is sleeved on the outer surface of the first clip section, one end abuts against the side wall of the handle 1 away from the interface body 201, and the other end abuts against the first clip body 701; the end of the first clip body 701 away from the first clip section is provided with a clip protrusion 703 abutting against the notch 104; the lower side of the clip protrusion 703 is provided with a clip notch 702 that allows the clip protrusion 703 to move downward;

[0069] Furthermore, the inner diameter of the end of the connector notch 702 close to the first spring 8 is smaller than the inner diameter of the end away from the first spring 8; the end of the first connector body 701 away from the first connector section is provided with a limiting tube 9 for limiting the moving distance of the first connector body 701 and the first connector section, the limiting tube 9 is sleeved on the outside of the inner tube 3, and the end of the limiting tube 9 away from the first connector section is engaged and connected with the interface body 201; the length of the side of the limiting tube 9 close to the end cap 5 and the side of the first connector body 701 close to the interface 2 is greater than the length of the hydrogel molding cavity 13.

[0070] Specifically, when in use, the connector protrusion 703 abuts against the notch 104 in the hydrogel forming state, so as to fix the first connector and the first spring 8. At this time, the first spring 8 is in a compressed state. The external hydrogel is injected into the inner tube 3 by using the Luer connector 203 until the hydrogel forming cavity 13 is filled. The hydrogel is subjected to a certain treatment (for example, a light source is used to irradiate the photosensitive hydrogel) to solidify the hydrogel.

[0071] The pressing spring piece 602 is placed at the position of the notch 104 and pressed downward. The pressing spring piece 602 is elastically deformed and contacts the connector protrusion 703 through the notch 104. The connector protrusion 703 moves downward and no longer contacts the notch 104. Under the action of the first spring 8, the first connector drives the outer tube 4 to move toward the side close to the interface 2 until it contacts the limiting tube 9. The hydrogel forming cavity 13 disappears, and the hydrogel escapes from the outer tube 4, thereby realizing the transportation of the hydrogel.

[0072] An external tool can be used to drive the first connector to move toward the side close to the end cap 5 through the reset hole 202 until the connector protrusion 703 abuts against the notch 104 again, thereby resetting the device.

[0073] Example 4

[0074] This embodiment provides a hydrogel forming and delivery device. Compared with Embodiment 3, except that the releaser is a second releaser, everything else is the same as Embodiment 3.

[0075] like Figure 6 As shown, in this embodiment, the second releaser includes a second releaser body 603, the second releaser body 603 is movably connected to the handle 1, and the second releaser body 603 is provided with a releaser protrusion 604 that allows it to extend into the notch 104;

[0076] The second releaser body 603 is in the shape of a rod, one end of which is fixedly connected to the handle 1 , and the other end is provided with a releaser protrusion 604 on a side close to the notch 104 .

[0077] When in use, the connector protrusion 703 abuts against the notch 104 in the hydrogel forming state, so as to fix the first connector and the first spring 8. At this time, the first spring 8 is in a compressed state. The external hydrogel is injected into the inner tube 3 by using the Luer connector 203 until the hydrogel forming cavity 13 is filled. The hydrogel is subjected to a certain treatment (for example, using a light source to irradiate the photosensitive hydrogel) to solidify the hydrogel.

[0078] The second releaser body 603 is pressed downward, and the releaser protrusion 604 contacts the connector protrusion 703 through the notch 104. The connector protrusion 703 moves downward and no longer contacts the notch 104. Under the action of the first spring 8, the first connector drives the outer tube 4 to move toward the side close to the interface 2 until it contacts the limiting tube 9. The hydrogel forming cavity 13 disappears, and the hydrogel escapes from the outer tube 4, thereby realizing the transportation of the hydrogel.

[0079] An external tool can be used to drive the first connector to move toward the side close to the end cap 5 through the reset hole 202 until the connector protrusion 703 abuts against the notch 104 again, thereby resetting the device.

[0080] Example 5

[0081] This embodiment provides a hydrogel forming and delivery device. Compared with Embodiment 3, except that the releaser is a second releaser, everything else is the same as Embodiment 3.

[0082] like Figure 7 As shown, in this embodiment, the second releaser includes a second releaser body 603, the second releaser body 603 is movably connected to the handle 1, and the second releaser body 603 is provided with a releaser protrusion 604 that allows it to extend into the notch 104;

[0083] The second releaser body 603 is in the shape of a handle, and its two ends are movably connected to the handle 1 , and a releaser protrusion 604 is provided on one side of the middle position close to the notch 104 .

[0084] When in use, the connector protrusion 703 abuts against the notch 104 in the hydrogel forming state, so as to fix the first connector and the first spring 8. At this time, the first spring 8 is in a compressed state. The external hydrogel is injected into the inner tube 3 by using the Luer connector 203 until the hydrogel forming cavity 13 is filled. The hydrogel is subjected to a certain treatment (for example, using a light source to irradiate the photosensitive hydrogel) to solidify the hydrogel.

[0085] The second releaser body 603 is moved to the position just above the notch 104, and the second releaser body 603 is pressed downward, so that the releaser protrusion 604 contacts the connector protrusion 703 through the notch 104, and the connector protrusion 703 moves downward and no longer contacts the notch 104. Under the action of the first spring 8, the first connector drives the outer tube 4 to move toward the side close to the interface 2 until it contacts the limiting tube 9, and the hydrogel forming cavity 13 disappears, and the hydrogel escapes from the outer tube 4, thereby realizing the transportation of the hydrogel.

[0086] An external tool can be used to drive the first connector to move toward the side close to the end cap 5 through the reset hole 202 until the connector protrusion 703 abuts against the notch 104 again, thereby resetting the device.

[0087] Example 6

[0088] This embodiment provides a hydrogel forming and delivery device, such as Figure 8 As shown, it includes a handle 1, an interface 2, an inner tube 3, an outer tube 4, a releaser and an adjustment component; the handle 1 is hollow inside, and a notch 104 is provided on the outer surface thereof to match the releaser and the adjustment component; the handle 1 is coaxially connected to the interface 2 through a first fitting section 101, and one end of the inner tube 3 is located in the interface 2 and is movably connected to the interface 2, extending to extend out of the handle 1; the adjustment component is provided in the inner cavity of the handle 1, is sleeved on the outer surfaces of the inner tube 3 and the outer tube 4, and is fixedly connected to the inner tube 3;

[0089] Among them, the interface 2 is used to receive the external hydrogel, the inner tube 3 is used to accommodate the hydrogel received by the interface 2, and the material of the inner tube 3 can be any biocompatible and opaque polymer or metal; the inner diameter of the outer tube 4 is 0.2mm-6mm, and is used to form or cancel the cavity formed with the inner tube 3. The material of the outer tube 4 is polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), polyimide (PI), nylon (PA), methyl methacrylate (PMMA), stainless steel (perforated), and any other biocompatible and light-transmissive polymer material or a metal that has been processed to be partially light-transmissive; the releaser is arranged on the handle 1, and is used to control the adjustment component; the adjustment component is used to drive the inner tube 3 to move relative to the outer tube 4.

[0090] The device has two states: hydrogel forming state and hydrogel delivery state:

[0091] When the releaser is in a stationary state, the device is in a hydrogel forming state, and the ends of the outer tube 4 and the inner tube 3 away from the interface 2 form a cavity, which is the hydrogel forming cavity 13; when the releaser is pressed down to the adjustment component to drive the inner tube 3 to move relative to the outer tube 4, the device is in a hydrogel conveying state, and the hydrogel forming cavity 13 disappears, allowing the conveying of the hydrogel.

[0092] Furthermore, the interface 2 includes an interface body 201 and a Luer connector 203 ; the interface body 201 is provided with a through hole running through its length direction for accommodating the inner tube 3 ; the end of the interface body 201 away from the handle 1 is embedded with the Luer connector 203 .

[0093] Furthermore, an end cap 5 is provided at the end of the handle 1 away from the interface 2, and is coaxially connected to the end cap 5 through a second interlocking section 102; the end cap 5 is provided with a through hole along its length direction to allow the outer tube 4 to extend out, and the outer diameter of the end cap 5 away from the handle 1 is smaller than the outer diameter of the end close to the handle 1; the end cap 5 is fixedly connected to the outer tube 4.

[0094] Furthermore, the releaser in this embodiment is a first releaser, comprising a first releaser body 601, the first releaser body 601 is sleeved on the handle 1 through the third engaging section 103 of the handle 1, and a pressing spring 602 is provided on one side of the first releaser body 601 close to the notch 104;

[0095] Furthermore, the width of the pressing spring piece 602 is smaller than the width of the notch 104; when the pressing spring piece 602 is located directly above the notch 104, the pressing spring piece 602 is allowed to be pressed down to activate the adjustment component, and the device is in a hydrogel delivery state.

[0096] Further, the adjustment component is a first adjustment component, including a first connector and a first spring 8; the first connector includes a first connector body 701 fixedly connected to the inner tube 3, and a first connector section is provided on the side of the first connector body 701 close to the interface body 201, wherein the outer diameter of the first connector body 701 is smaller than the inner diameter of the handle 1 (allowing the movement of the first connector body 701), and the outer diameter of the first connector section is smaller than the outer diameter of the first connector body 701; the first spring 8 is sleeved on the outer surface of the first connector section, one end abuts the interface body 201, and the other end abuts the first connector body 701; the end of the first connector body 701 away from the first connector section is provided with a connector protrusion 703 abutting against the notch 104; the lower side of the connector protrusion 703 is provided with a notch 702 allowing the connector protrusion 703 to move downward;

[0097] Furthermore, the inner diameter of the end of the notch 702 close to the first spring 8 is smaller than the inner diameter of the end away from the first spring 8; a limiting tube 9 for limiting the moving distance of the first connector body 701 and the first connector section is provided on the side of the first connector body 701 away from the first connector section, and the limiting tube 9 is sleeved on the outside of the inner tube 3, and the end of the limiting tube 9 away from the first connector section is fixedly connected to the end cap 5; the length of the side of the limiting tube 9 close to the interface body 201 and the side of the first connector body 701 close to the end cap 5 is greater than the length of the hydrogel molding cavity 13.

[0098] Specifically, when in use, the connector protrusion 703 abuts against the notch 104 in the hydrogel forming state, so as to fix the first connector and the first spring 8. At this time, the first spring 8 is in a compressed state. The external hydrogel is injected into the inner tube 3 by using the Luer connector 203 until the hydrogel forming cavity 13 is filled. The hydrogel is subjected to a certain treatment (for example, a light source is used to irradiate the photosensitive hydrogel) to solidify the hydrogel.

[0099] The pressing spring piece 602 is placed at the position of the notch 104 and pressed downward. The pressing spring piece 602 undergoes elastic deformation and contacts the connector protrusion 703 through the notch 104. The connector protrusion 703 moves downward and no longer contacts the notch 104. Under the action of the first spring 8, the first connector drives the inner tube 3 to move toward the side close to the end cap 5 until it contacts the limiting tube 9. The hydrogel molding cavity 13 disappears, and the hydrogel escapes from the outer tube 4, thereby realizing the transportation of the hydrogel.

[0100] Example 7

[0101] This embodiment provides a hydrogel forming and delivery device. Compared with Example 6, except that the releaser is a second releaser (the second releaser described in Example 4 is used), everything else is the same as Example 6.

[0102] In this embodiment, the second releaser includes a second releaser body 603, which is movably connected to the handle 1, and a releaser protrusion 604 is provided on the second releaser body 603 to allow the releaser protrusion 604 to extend into the notch 104;

[0103] The second releaser body 603 is in the shape of a rod, one end of which is fixedly connected to the handle 1 , and the other end is provided with a releaser protrusion 604 on a side close to the notch 104 .

[0104] When in use, the connector protrusion 703 abuts against the notch 104 in the hydrogel forming state, so as to fix the first connector and the first spring 8. At this time, the first spring 8 is in a compressed state. The external hydrogel is injected into the inner tube 3 by using the Luer connector 203 until the hydrogel forming cavity 13 is filled. The hydrogel is subjected to a certain treatment (for example, using a light source to irradiate the photosensitive hydrogel) to solidify the hydrogel.

[0105] The second releaser body 603 is pressed downward, and the releaser protrusion 604 contacts the connector protrusion 703 through the notch 104. The connector protrusion 703 moves downward and no longer abuts against the notch 104. Under the action of the first spring 8, the first connector drives the inner tube 3 to move toward the side away from the interface 2 until it contacts the limiting tube 9. The hydrogel molding cavity 13 disappears, and the hydrogel escapes from the outer tube 4, thereby realizing the transportation of the hydrogel.

[0106] Example 8

[0107] This embodiment provides a hydrogel forming and delivery device. Compared with Embodiment 3, except that the releaser is a second releaser (the second releaser described in Embodiment 5 is used), everything else is the same as Embodiment 3.

[0108] In this embodiment, the second releaser includes a second releaser body 603, which is movably connected to the handle 1, and a releaser protrusion 604 is provided on the second releaser body 603 to allow the releaser protrusion 604 to extend into the notch 104;

[0109] The second releaser body 603 is in the shape of a handle, and its two ends are movably connected to the handle 1 , and a releaser protrusion 604 is provided on one side of the middle position close to the notch 104 .

[0110] When in use, the connector protrusion 703 abuts against the notch 104 in the hydrogel forming state, so as to fix the first connector and the first spring 8. At this time, the first spring 8 is in a compressed state. The external hydrogel is injected into the inner tube 3 by using the Luer connector 203 until the hydrogel forming cavity 13 is filled. The hydrogel is subjected to a certain treatment (for example, using a light source to irradiate the photosensitive hydrogel) to solidify the hydrogel.

[0111] Move the second releaser body 603 to just above the notch 104, press the second releaser body 603 downward, the releaser protrusion 604 contacts the connector protrusion 703 through the notch 104, the connector protrusion 703 moves downward and no longer abuts against the notch 104, under the action of the first spring 8, the first connector drives the inner tube 3 to move toward the side away from the interface 2 until it contacts the limiting tube 9, the hydrogel molding cavity 13 disappears, and the hydrogel escapes from the outer tube 4, thereby realizing the transportation of the hydrogel.

[0112] Example 9

[0113] This embodiment provides a hydrogel forming and delivery device. Compared with Example 3, except for the releaser and the adjustment component, everything else is the same as Example 3.

[0114] like Figure 9-10 As shown, in this embodiment, the releaser is a third releaser body 1001, which is arranged at the position of the notch 104, and a first inclined platform 1002 connected to the second adjustment component is arranged at the bottom; the second adjustment component includes a second connector and a second spring 12; the second connector includes a second connector body 1101, and the outer diameter of the second connector body 1101 is smaller than the inner diameter of the handle 1 (allowing the second connector body 1101 to move); a first groove 1102 is arranged along the outer surface of the middle position of the second connector, and a second groove 1103 is arranged on the outer surface close to the end of the interface body 201; a second inclined platform 1104 movably connected to the first inclined platform 1002 is arranged at the position of the first groove 1102; the second spring 12 is sleeved at the position of the second groove 1103, one end of which abuts against the second connector body 1101, and the other end abuts against the interface body 201;

[0115] The third releaser body 1001 is pressed downward, driving the first inclined platform 1002 downward, further driving the second inclined platform 1104 downward and driving the second connector to move in the direction of squeezing the second spring 12; further driving the outer tube 4 to move in the direction close to the inner tube 3, the hydrogel molding cavity 13 disappears, and the hydrogel is transported.

[0116] When in use, the second spring 12 is in a relaxed state in the hydrogel forming state, and has no interaction force with the second connector. The external hydrogel is injected into the inner tube 3 by using the Luer connector 203 until the hydrogel forming cavity 13 is filled. The hydrogel is subjected to a certain treatment (for example, using a light source to irradiate the photosensitive hydrogel) to solidify it.

[0117] The third releaser body 1001 is pressed downward, and the third releaser body 1001 drives the first inclined platform 1002 to press down the second inclined platform 1104, and the second inclined platform 1104 drives the second regulator, and then drives the outer tube 4 to move toward the side close to the interface 2 (the second spring 12 is squeezed), the hydrogel forming cavity 13 disappears, and the hydrogel escapes from the outer tube 4, thereby realizing the transportation of the hydrogel;

[0118] After the conveying is completed, the pressing down of the third releaser body 1001 stops, and under the action of the second spring 12, the second connector and the third releaser are reset.

[0119] Example 10

[0120] This embodiment provides a hydrogel forming and delivery device. Compared with Example 6, except for the releaser and the adjustment component, all other aspects are the same as Example 6.

[0121] like Fig.11 As shown, in this embodiment, the releaser is a third releaser body 1001, which is arranged at the position of the notch 104, and a first ramp 1002 connected to the second adjustment component is arranged at the bottom; the second adjustment component includes a second connector and a second spring 12; the second connector includes a second connector body 1101, which is fixedly connected to the inner tube 3, and the outer diameter of the second connector body 1101 is smaller than the inner diameter of the handle 1 (allowing the second connector body 1101 to move); a first groove 1102 is arranged along the outer surface of the middle position of the second connector, and a second groove 1103 is arranged on the outer surface of the end near the end cap 5; a second ramp 1104 movably connected to the first ramp 1002 is arranged at the position of the first groove 1102; the second spring 12 is sleeved at the position of the second groove 1103, one end abuts the second connector body 1101, and the other end abuts the end cap 5;

[0122] The third releaser body 1001 is pressed downward, driving the first inclined platform 1002 downward, further driving the second inclined platform 1104 downward and driving the second connector to move in the direction of squeezing the second spring 12; further driving the inner tube 3 to move in the direction close to the outer tube 4, the hydrogel molding cavity 13 disappears, and the hydrogel is transported.

[0123] When in use, the second spring 12 is in a relaxed state in the hydrogel forming state, and has no interaction force with the second connector. The external hydrogel is injected into the inner tube 3 by using the Luer connector 203 until the hydrogel forming cavity 13 is filled. The hydrogel is subjected to a certain treatment (for example, using a light source to irradiate the photosensitive hydrogel) to solidify it.

[0124] The third releaser body 1001 is pressed downward, and the third releaser body 1001 drives the first inclined platform 1002 to press down the second inclined platform 1104, and the second inclined platform 1104 drives the second regulator, thereby driving the inner tube 3 to move toward the side close to the end cap 5 (the second spring 12 is squeezed), the hydrogel forming cavity 13 disappears, and the hydrogel escapes from the outer tube 4, thereby realizing the transportation of the hydrogel;

[0125] After the conveying is completed, the pressing down of the third releaser body 1001 stops, and under the action of the second spring 12, the second connector and the third releaser are reset.

[0126] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the interpretation of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A hydrogel forming and delivery device, characterized in that: The device comprises an interface (2), an inner tube (3), an outer tube (4) and an adjustment component; The interface (2) is arranged at the end of the inner tube (3) and is provided with a through hole that allows the inner tube (3) to extend out, and is used to receive the external hydrogel; The inner tube (3) is used to accommodate the hydrogel received by the interface (2); The outer tube (4) is sleeved on the outer surface of the inner tube (3) at a side away from the interface (2) and is movably connected to the inner tube (3); the side of the outer tube (4) away from the interface (2) is allowed to form a cavity with the inner tube (3) as a hydrogel molding cavity (13); The regulating assembly is connected to the inner tube (3) and is used to drive the inner tube (3) to move toward a side away from the interface (2) to cancel the cavity formed with the outer tube (4), thereby realizing the transportation of the hydrogel; Alternatively, the adjustment component is connected to the outer tube (4) and is used to drive the outer tube (4) to move toward a side close to the interface (2) to cancel the cavity formed with the inner tube (3), thereby achieving the transportation of the hydrogel.

2. A hydrogel forming and delivery device according to claim 1, characterized in that: The device further comprises a handle (1), which is hollow inside and contains an inner tube (3), an outer tube (4) and an adjustment component, and is coaxially connected to the interface (2).

3. A hydrogel forming and delivery device according to claim 2, characterized in that: The device further comprises a releaser, which is arranged on the handle (1). The handle (1) is provided with a notch (104) which allows the regulating component to move along the axial direction of the inner tube (3). The releaser allows contact with the regulating component through the notch (104) to control the relative movement of the regulating component regulating the outer tube (4) and the inner tube (3).

4. A hydrogel forming and conveying device according to claim 3, characterized in that: The releaser is a first releaser, comprising a first releaser body (601), the first releaser body (601) being sleeved on the handle (1), and a pressing spring (602) allowing the first releaser body (601) to extend into the notch (104) is provided on a side of the first releaser body (601) close to the notch (104); Alternatively, the releaser is a second releaser, the second releaser comprises a second releaser body (603), the second releaser body (603) is movably connected to the handle (1), and the second releaser body (603) is provided with a releaser protrusion (604) that allows it to extend into the notch (104).

5. A hydrogel forming and conveying device according to claim 4, characterized in that: When the releaser is a first releaser or a second releaser, the adjustment component is a first adjustment component; The first adjustment assembly comprises a first connector and a first spring (8), the first connector comprising a first connector body (701), The first connector body (701) is sleeved on the outside of the outer tube (4), and the first spring (8) is arranged on the side of the first connector body (701) away from the interface (2) and sleeved on the outside of the outer tube (4); or, the first connector body (701) is sleeved on the outside of the inner tube (3), and the first spring (8) is arranged on the side of the first connector body (701) close to the interface (2) and sleeved on the outside of the inner tube (3); The end of the first connector body (701) away from the first spring (8) is provided with a connector protrusion (703) abutting against the notch (104); the lower side of the connector protrusion (703) is provided with a connector notch (702) allowing the connector protrusion (703) to move downward.

6. A hydrogel forming and conveying device according to claim 5, characterized in that: A limiting tube (9) for limiting the moving distance of the first connector body (701) is provided on a side of the first connector body (701) away from the first spring (8); The distance between the end of the limiting tube (9) close to the first connector body (701) and the end of the first connector body (701) close to the limiting tube (9) is greater than the length of the hydrogel molding cavity (13).

7. A hydrogel forming and conveying device according to claim 3, characterized in that: The releaser is a third releaser, and the third releaser comprises a third releaser body (1001). The third releaser body (1001) is arranged at the notch (104), and the bottom is connected to the adjustment component.

8. A hydrogel forming and delivery device according to claim 7, characterized in that: When the releaser is a third releaser, the adjustment component is a second adjustment component; The second adjustment assembly comprises a second connector and a second spring (12); the second connector comprises a second connector body (1101), the outer diameter of the second connector body (1101) being smaller than the inner diameter of the handle (1); a second inclined platform (1104) movably connected to the third releaser body (1001) is provided at the middle position of the second connector body (1101); The second connector body (1101) is sleeved on the outside of the outer tube (4), and the second spring (12) is arranged on a side of the second connector body (1101) close to the interface (2) and sleeved on the outside of the inner tube (3); Alternatively, the second connector body (1101) is sleeved on the outside of the inner tube (3), and the second spring (12) is arranged on a side of the second connector body (1101) away from the interface (2) and sleeved on the outside of the outer tube (4).

9. A hydrogel forming and delivery device according to claim 1, characterized in that: The interface (2) comprises an interface body (201) and a Luer connector (203); The interface body (201) is provided with a through hole running through its length direction and used to accommodate the inner tube (3); and a Luer connector (203) is embedded and provided at the end of the interface body (201) away from the outer tube (4).

10. A hydrogel forming and conveying device according to claim 9, characterized in that: The interface body (201) is provided with a reset hole (202) for controlling the reset of the adjustment component.

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