Burn skin grafting operation water injection system

Abstract

The utility model relates to medical instrument technical field, specifically disclose burn skin grafting operation water injection system, include: water injection subassembly and assemble in the water injection subassembly one side's tee pipe subassembly and assemble in the tee pipe subassembly top's liquid supply subassembly, the water injection subassembly includes support frame, the top fixed mounting of support frame has the limit bush, the inside installation of limit bush has syringe, the one side sliding installation of support frame has auxiliary rod, the top fixed mounting of auxiliary rod has the clamping seat corresponding with syringe, the tee pipe subassembly includes the delivery pipe intercommunication in syringe one side, the one side of delivery pipe has and inserts the injection needle, the utility model discloses can automatically absorb physiological saline in the liquid storage bag into syringe to complete the liquid supplement operation, can continue to water injection to the skin grafting position, can quickly complete water injection operation and save time and labour, bring more convenience for use.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a water injection system for burn skin grafting surgery. Background Technology

[0002] Burns, a common type of trauma, require multidisciplinary treatment, especially in cases of large-area burns, where skin grafting becomes a crucial step in restoring skin integrity and function. Before a skin graft, doctors need to harvest healthy skin tissue from other parts of the patient's body—a process called skin harvesting. To minimize pain and damage during harvesting and to ensure the harvested skin tissue is intact and of uniform thickness, preoperative hydrotherapy is an essential step. Hydrotherapy causes swelling of the subcutaneous tissue, making separation between the skin and subcutaneous tissue easier, thereby reducing bleeding and tissue damage during harvesting.

[0003] However, traditional saline injection methods usually rely on using a syringe to inject saline solution. Due to the limited storage space inside the syringe, doctors need to repeatedly remove the syringe, draw up the saline solution, and then puncture the skin again to inject it. This process is cumbersome, time-consuming, and laborious, causing considerable inconvenience. Therefore, the applicant proposes a saline injection system for burn skin grafting surgery to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a water injection system for burn skin grafting surgery. During the water injection process, water can be continuously injected into the skin grafting site without removing the syringe for re-puncture. The water injection operation can be completed quickly, and the operation is simple, fast, time-saving, and labor-saving, bringing great convenience to the user.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A water-filled surgical system for burn skin grafting includes:

[0007] Water injection assembly and a three-way pipe assembly mounted on one side of the water injection assembly, and a liquid supply assembly mounted on the top of the three-way pipe assembly;

[0008] The water injection assembly includes a support frame, a limiting sleeve is fixedly installed on the top of the support frame, an injector is installed inside the limiting sleeve, an auxiliary rod is slidably installed on one side of the support frame, and a retainer corresponding to the injector is fixedly installed on the top of the auxiliary rod.

[0009] The three-way tube assembly includes a delivery tube connected to one side of the syringe, an injection needle inserted into one side of the delivery tube, a first sealing seat slidably installed inside the delivery tube, a replenishment tube connected to the top of the delivery tube, and a second sealing seat slidably installed inside the replenishment tube.

[0010] The liquid supply assembly includes a storage bag connected to the top of the replenishment tube.

[0011] Preferably, the support frame has an internal groove for the auxiliary rod to slide in, and a thrust spring is fixedly installed between the auxiliary rod and the groove.

[0012] Preferably, the limiting sleeve is fixed to the syringe by a fixing knob, and the support frame is fixedly installed to the delivery tube by a fixing bracket.

[0013] Preferably, the delivery tube is connected to the syringe via a third mating sleeve, and the delivery tube is connected to the injection needle via a first mating sleeve.

[0014] Preferably, the top of the replenishment tube is provided with a second docking sleeve, and an infusion tube is inserted between the second docking sleeve and the storage bag.

[0015] Preferably, a first sealing ring corresponding to the first sealing seat is fixedly installed on the inner wall of the delivery pipe, and a second sealing ring corresponding to the second sealing seat is fixedly installed on the inner wall of the replenishment pipe.

[0016] Preferably, the first sealing seat and the first sealing ring, as well as the second sealing seat and the second sealing ring, are slidably installed via a slide rod, and a suspension strap is fixedly installed on the top of the liquid storage bag.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) This utility model is equipped with a three-way tube assembly and a liquid supply assembly that work together. After the injection is completed, the syringe piston can be pulled to automatically draw the saline in the reservoir bag into the syringe to complete the liquid replenishment operation. Water can be continuously injected into the skin collection site without removing the syringe for another puncture. The water injection operation can be completed quickly, and the operation is simple, fast, time-saving and labor-saving, bringing more convenience to the user.

[0019] (2) The present invention is provided with an auxiliary rod on the support frame. After the syringe is pressed to inject water, the piston of the syringe can be pushed outward by the reset action of the auxiliary rod. This allows the syringe to automatically draw in the saline solution in the reservoir bag for rehydration. There is no need to manually pull the piston of the syringe. The water injection operation can be completed by holding it with one hand, which effectively improves the use effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the water injection mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the support frame structure of this utility model;

[0023] Figure 4 This is a cross-sectional view of the three-way pipe assembly of this utility model;

[0024] Figure 5 This is a schematic diagram of the auxiliary rod structure of this utility model;

[0025] In the diagram: 1. Liquid supply assembly; 11. Liquid storage bag; 12. Infusion tube; 13. Suspension belt; 2. Water injection assembly; 21. Support frame; 22. Limiting sleeve; 23. Fixing knob; 24. Auxiliary rod; 25. Card seat; 26. Syringe; 27. Fixing frame; 28. Movable groove; 29. ​​Thrust spring; 3. Three-way tube assembly; 31. Delivery tube; 32. Injection needle; 33. First sealing ring; 34. First sealing seat; 35. Slide rod; 36. First docking sleeve; 37. Liquid replenishment tube; 38. Second sealing seat; 39. Second sealing ring; 310. Second docking sleeve; 311. Third docking sleeve. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1:

[0030] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the water injection system for burn skin grafting surgery includes:

[0031] Water injection assembly 2 and a three-way pipe assembly 3 assembled on one side of water injection assembly 2, and liquid supply assembly 1 assembled on the top of three-way pipe assembly 3;

[0032] The water injection assembly 2 includes a support frame 21, a limiting sleeve 22 is fixedly installed on the top of the support frame 21, an injector 26 is installed inside the limiting sleeve 22, an auxiliary rod 24 is slidably installed on one side of the support frame 21, and a card seat 25 corresponding to the injector 26 is fixedly installed on the top of the auxiliary rod 24.

[0033] The three-way tube assembly 3 includes a delivery tube 31 connected to one side of the syringe 26, an injection needle 32 inserted into one side of the delivery tube 31, a first sealing seat 34 slidably installed inside the delivery tube 31, a replenishment tube 37 connected to the top of the delivery tube 31, and a second sealing seat 38 slidably installed inside the replenishment tube 37.

[0034] The liquid supply assembly 1 includes a liquid storage bag 11 connected to the top of the liquid replenishment tube 37.

[0035] As can be seen from the above, during use, the reservoir bag 11 is suspended on the infusion stand, the injection end of the syringe 26 is inserted into one side of the delivery tube 31 for connection, and the syringe 26 is then fixed in the limiting sleeve 22. The limiting sleeve 22 can prevent the syringe 26 from shaking and falling off. The bottom of the piston end of the syringe 26 is inserted into the retainer 25, and the injection needle 32 is inserted into the other end of the delivery tube 31 for connection. By pressing the piston rod of the syringe 26, the saline solution inside the syringe 26 can be pushed into the delivery tube 31. When the delivery tube 31 is under pressure, it can push the second sealing seat 38 to move upward to close, which can block the connection between the infusion tube 37 and the delivery tube 31. At the same time, it can push the first sealing seat 34 to move to the left to open, which can connect the delivery tube 31 and the injection needle 32, so that the saline solution can be easily discharged through the injection needle 32, which is convenient for water injection operation at the skin sampling site.

[0036] After the saline solution in syringe 26 is injected, the auxiliary rod 24 can move to the right, and the piston of syringe 26 can be moved to the right synchronously by the retainer 25, so that the inside of syringe 26 is in a negative pressure state. At this time, the delivery tube 31 can also be in a negative pressure state. The negative pressure state can drive the first sealing seat 34 to move to the right to close, which can block the connection between the injection needle 32 and the delivery tube 31. At the same time, the second sealing seat 38 can move downward to open, which can connect the infusion tube 37 and the delivery tube 31. It is convenient to use the negative pressure state to draw the saline solution stored in the reservoir bag 11 into syringe 26, which can facilitate automatic infusion operation of syringe 26. It allows medical personnel to continuously inject water into the skin graft site without removing syringe 26 and performing a second puncture. The water injection operation can be completed quickly, which is simple and fast, saves time and effort, and brings more convenience to users.

[0037] Depend on Figure 5 It can be seen that the support frame 21 has an internal movable groove 28 for the auxiliary rod 24 to slide, and a thrust spring 29 is fixedly installed between the auxiliary rod 24 and the movable groove 28.

[0038] As can be seen from the above, the auxiliary rod 24 can slide left and right through the movable groove 28. The push spring 29 applies a pushing force to the auxiliary rod 24, which can easily push the auxiliary rod 24 to the right, thereby driving the piston of the syringe 26 to move outward. This allows the syringe 26 to draw in the saline solution in the reservoir bag 11. There is no need to manually pull the piston of the syringe 26. The injection operation can be completed by holding it with one hand, which effectively improves the usage effect.

[0039] For details, please refer to Figure 2 and Figure 3As shown, the limiting sleeve 22 is fixed to the syringe 26 by the fixing knob 23, and the support frame 21 is fixed to the delivery tube 31 by the fixing bracket 27.

[0040] As can be seen from the above, when the syringe 26 is inserted into the limiting sleeve 22, the syringe 26 can be fixed by the fixing knob 23 to prevent the syringe 26 from falling off. The delivery tube 31 can be easily fixed by the fixing bracket 27, so that the entire three-way tube assembly 3 can be prevented from falling off.

[0041] For details, please refer to Figure 2 and Figure 4 As shown, the delivery tube 31 is connected to the syringe 26 via a third docking sleeve 311, and the delivery tube 31 is connected to the injection needle 32 via a first docking sleeve 36.

[0042] As can be seen from the above, by inserting the liquid outlet end of the syringe 26 into the third docking sleeve 311, it is easy to connect with the delivery tube 31. The first docking sleeve 36 can be used to easily install the injection needle 32 and the delivery tube 31, and at the same time, it is easy to disassemble and replace the syringe 26 and the injection needle 32.

[0043] Example 2:

[0044] refer to Figure 1 and Figure 4 As shown, a second docking sleeve 310 is provided at the top of the replenishment tube 37, and an infusion tube 12 is inserted between the second docking sleeve 310 and the storage bag 11.

[0045] As can be seen from the above, by inserting the bottom end of the infusion tube 12 into the second docking sleeve 310, the infusion tube 12 can be easily connected to the refill tube 37, and the top end of the infusion tube 12 can be connected to the reservoir bag 11, so that the saline in the reservoir bag 11 can be easily introduced into the refill tube 37 through the infusion tube 12, which facilitates the refill operation of the syringe 26.

[0046] refer to Figure 4 As shown, a first sealing ring 33 corresponding to the first sealing seat 34 is fixedly installed on the inner wall of the delivery pipe 31, and a second sealing ring 39 corresponding to the second sealing seat 38 is fixedly installed on the inner wall of the replenishment pipe 37.

[0047] As can be seen from the above, when the syringe 26 is under negative pressure, the first sealing seat 34 moves to the right, which allows the first sealing seat 34 to fit and seal with the first sealing ring 33, thus blocking the connection between the injection needle 32 and the delivery tube 31. When water is injected through the syringe 26, the second sealing seat 38 is subjected to pressure and moves upward, allowing the second sealing seat 38 to fit and seal with the second sealing ring 39, thus blocking the connection between the replenishment tube 37 and the delivery tube 31, preventing water from flowing into the replenishment tube 37 during injection.

[0048] refer to Figure 4 As shown, the first sealing seat 34 and the first sealing ring 33, as well as the second sealing seat 38 and the second sealing ring 39, are slidably installed through the slide rod 35, and the top of the liquid storage bag 11 is fixedly installed with a suspension strap 13.

[0049] As can be seen from the above, the sliding action of the slide bar 35 enables the first sealing seat 34 to move stably left and right, and at the same time enables the second sealing seat 38 to move stably vertically, thus preventing the first sealing seat 34 and the second sealing seat 38 from tilting.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water injection system for burn skin grafting surgery, characterized in that, include: Water injection assembly (2) and a three-way pipe assembly (3) assembled on one side of the water injection assembly (2), and a liquid supply assembly (1) assembled on the top of the three-way pipe assembly (3); The water injection assembly (2) includes a support frame (21), a limiting sleeve (22) is fixedly installed on the top of the support frame (21), an injector (26) is installed inside the limiting sleeve (22), an auxiliary rod (24) is slidably installed on one side of the support frame (21), and a card seat (25) corresponding to the injector (26) is fixedly installed on the top of the auxiliary rod (24). The three-way tube assembly (3) includes a delivery tube (31) connected to one side of the syringe (26), an injection needle (32) is inserted into one side of the delivery tube (31), a first sealing seat (34) is slidably installed inside the delivery tube (31), a replenishment tube (37) is connected to the top of the delivery tube (31), and a second sealing seat (38) is slidably installed inside the replenishment tube (37). The liquid supply assembly (1) includes a storage bag (11) connected to the top of the replenishment tube (37).

2. The water injection system for burn skin grafting surgery according to claim 1, characterized in that: The support frame (21) has an internal movable groove (28) for the auxiliary rod (24) to slide, and a thrust spring (29) is fixedly installed between the auxiliary rod (24) and the movable groove (28).

3. The water injection system for burn skin grafting surgery according to claim 1, characterized in that: The limiting sleeve (22) is fixed to the syringe (26) by a fixing knob (23), and the support frame (21) is fixed to the delivery tube (31) by a fixing bracket (27).

4. The water injection system for burn skin grafting surgery according to claim 1, characterized in that: The delivery tube (31) is connected to the syringe (26) via a third docking sleeve (311), and the delivery tube (31) is connected to the injection needle (32) via a first docking sleeve (36).

5. The water injection system for burn skin grafting surgery according to claim 1, characterized in that: The top of the replenishment tube (37) is provided with a second docking sleeve (310), and an infusion tube (12) is inserted between the second docking sleeve (310) and the storage bag (11).

6. The water injection system for burn skin grafting surgery according to claim 1, characterized in that: The inner wall of the delivery pipe (31) is fixedly installed with a first sealing ring (33) corresponding to the first sealing seat (34), and the inner wall of the replenishment pipe (37) is fixedly installed with a second sealing ring (39) corresponding to the second sealing seat (38).

7. The water injection system for burn skin grafting surgery according to claim 6, characterized in that: The first sealing seat (34) and the first sealing ring (33) and the second sealing seat (38) and the second sealing ring (39) are slidably installed through a slide rod (35), and a suspension strap (13) is fixedly installed on the top of the liquid storage bag (11).

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