Liver ascites drainage end fixing device

Abstract

The liver ascites drainage end fixing device comprises a fixing assembly, a base plate, an outer circular ring and an inner circular ring, a movable telescopic rod penetrating through the outer circular ring and the inner circular ring is arranged between the outer circular ring and the inner circular ring, and a slope type gradual change clamping block is arranged between the outer circular ring and the inner circular ring; the connection assembly comprises a sleeve, the inner wall of the sleeve is provided with an inner ring making contact with the end face of the pintle, and the outer wall of the sleeve is provided with a pair of clamping jaws connected with the drainage needle. When medical instruments such as syringes and hoses are replaced and the body of a patient is moved, the displacement of the drainage needle head is prevented to a great extent; and secondly, the connection assembly is mounted on the pintle of the drainage needle head, so that when a syringe, a hose and other medical instruments are mounted, the pressing and pulling actions are reduced, the excessive puncture of the needle point in the body caused by the pressing action can be avoided, and the displacement or the pulling of the drainage needle head caused by the pulling action can also be prevented.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a device for fixing the drainage end of hepatic ascites. Background Art

[0002] Ascites due to cirrhosis is commonly known as hepatic ascites. It is a chronic liver disease. The obvious symptoms of hepatic ascites are a large amount of abdominal fluid causing abdominal distension, a frog belly or a sagging abdomen.

[0003] Before draining the ascites, local anesthesia is required, and then the puncture point is located, the needle used for drainage is inserted, and the ascites in the abdomen is extracted. When there is less ascites, a syringe is generally used for extraction; when there is more ascites, an aspirator is used to cooperate with the extraction. However, in the actual process of draining ascites, the use of a syringe to extract usually cannot ensure that one syringe can be fully extracted. If the ascites cannot be fully extracted, a new, empty syringe needs to be replaced. The action of replacing and installing the syringe may cause the needle to vibrate or move, which may easily cause excessive puncture or needle swinging and dislocation; using an aspirator to drain ascites requires a drainage tube to be connected between the needle and the aspirator. In the medical process, it is not recommended to extract too much at a time, so the needle needs to be retained in the patient's body for a certain period of time, and the patient is required to try not to move around. However, the patient is prone to physical discomfort and irritability due to maintaining a posture for a long time, shaking or swinging the body, which may cause the needle used for drainage to slip out of the body. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide a liver ascites drainage end fixing device, which can reduce excessive puncture and swing of the needle and prevent the needle from coming out.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] A liver ascites drainage end fixing device, comprising:

[0007] The fixing assembly comprises a chassis with a hole in the middle, an outer ring and an inner ring are arranged at the right end of the chassis, a telescopic rod passing through the outer ring and the inner ring and being movable is arranged between the outer ring and the inner ring, a cavity is arranged between the outer ring and the inner ring, a sloped gradual block is arranged in the cavity, and a bayonet is arranged on the sloped gradual block for clamping the telescopic rod and controlling the telescopic rod to move toward the middle of the chassis;

[0008] The drainage needle comprises a needle rod and a needle plug, the side wall of the needle plug is provided with a slot, and the outer wall of the middle part of the needle plug is provided with a flange;

[0009] The docking assembly is arranged at the end of the needle bolt away from the needle rod. The docking assembly includes a sleeve. The inner wall of the sleeve is provided with an inner ring that contacts the end surface of the needle bolt. The outer wall of the sleeve is provided with a pair of movable claws, and the claw heads of the claws are fixed on the flange.

[0010] Fix the fixing component at the patient's puncture point. After the drainage needle is inserted, the telescopic rod is driven to move toward the slot of the needle plug and fix the drainage needle by rotating the sloped gradient card block; one end of the connecting component is connected to the syringe or drainage tube, which is connected by the claw and the needle plug to avoid pressing the drainage needle when replacing.

[0011] In order to enable the base plate to be fixed on the patient's skin, in some embodiments, an adhesive layer is provided on the bottom of the base plate.

[0012] In order to allow the telescopic rod to move between the outer ring and the inner ring, in some embodiments, coaxial through holes are provided on the sides of the outer ring and the inner ring.

[0013] According to a further development of the above solution, the telescopic rod is arranged in a coaxial through hole formed in the outer ring and the inner ring.

[0014] According to the above aspect of the present disclosure, a shoulder is provided on the outer wall of the telescopic rod located between the outer ring and the inner ring.

[0015] After the bayonet of the slope-type gradual change block is inserted into the telescopic rod, the inner surface of the bayonet block contacts the step, and when the slope-type gradual change block moves, the telescopic rod is pushed to move.

[0016] In order to realize the movement of the telescopic rod driven by the sloped gradual block, the above scheme is further expanded, the outer surface of the sloped gradual block matches the inner surface of the outer ring, the inner surface is arc-shaped, and gradually extends toward the middle of the circular plate.

[0017] According to the above aspects of the present disclosure, one end of the claw relative to the claw head is movably connected to a fixed sleeve, the left end surface of the fixed sleeve is provided with an inner flange, the outer wall of the movable ring is provided with an escape groove for placing the inner flange, and the inner wall of the other end of the fixed sleeve is movably connected to the outer wall of the sleeve. The fixed sleeve is used to tighten the claw to make the pintle and the inner ring of the sleeve fit tightly.

[0018] Compared with the prior art, the present application achieves at least the following beneficial effects: the present device uses a fixing component with a large adhesive area and a clamping method to fix the drainage needle, thereby suppressing the drainage needle from swinging and slipping out at the puncture point, and preventing the drainage needle from being displaced to a great extent when replacing medical instruments such as syringes and hoses and when the patient moves the body; secondly, a docking component is installed on the needle plug of the drainage needle, which reduces the pressing and pulling actions when installing medical instruments such as syringes and hoses, thereby avoiding excessive puncture of the needle tip in the body caused by the pressing action, and preventing the drainage needle from being displaced or falling out due to the pulling action. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0020] Figure 1 This is a three-dimensional schematic diagram of a liver ascites drainage end fixing device according to one embodiment of the present application;

[0021] Figure 2 A front cross-sectional view of the fixing device of the present application;

[0022] Figure 3 for Figure 2 The local schematic diagram of the A in the middle;

[0023] Figure 4 An exploded view of a fixing assembly of the fixing device of the present application;

[0024] Figure 5 A right perspective view of the fixing assembly of the fixing device of the present application without locking the drainage needle;

[0025] Figure 6 It is a right perspective view of the fixing assembly of the fixing device of the present application locking the drainage needle.

[0026] The numbers in the figure are: 1, chassis; 2, needle tip; 3, telescopic rod; 4, round cover; 5, round plate; 51, rotating hole; 6, drainage tube; 7, outer ring; 8, needle bolt; 81, slot; 82, flange; 9, fixed sleeve; 91, inner flange; 10, sleeve; 101, inner ring; 11, claw; 111, claw head; 112, kneading part; 113, movable ring; 12, rubber gasket; 13, inner ring; 14, sloped gradual block; 141, bayonet. DETAILED DESCRIPTION

[0027] The present application will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present application can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided here to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0028] In the description of the present application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0029] The defect in the prior art that the drainage needle is easy to swing or slip when replacing the syringe or puncturing the drainage needle in the body for a long time to drain ascites. After careful analysis, the inventor found that the reason for the above problem is mainly that when replacing the syringe, the barrel of the syringe and the needle plug are combined together with an interference fit. When replacing the syringe, there is a pulling action, which gives the needle a reaction force. When the syringe is pulled out, the needle will move into the patient's body due to the force, which may cause the puncture to be deeper and cause excessive puncture. When installing the syringe, it is necessary to hold the needle plug and apply pressure to connect the needle plug and the barrel of the syringe. This operation may cause the needle tip to move in the opposite direction of the skin, causing the needle to be displaced. While installing and replacing the syringe, it may also The needle is caused to swing to a certain extent; if there is a lot of ascites, it is impossible to extract too much at one time, because too much drainage of ascites can easily induce a sudden drop in abdominal pressure and clinical discomfort. The patient will also show abdominal distension, nausea and vomiting. Therefore, the doctor will recommend continuous drainage. Therefore, an aspirator can be used to connect the drainage tube to the needle for a cycle of drainage. During the process of draining ascites, patients are generally advised to reduce exercise, but long periods of immobility can easily make patients irritable and cause body shaking. When the body shakes, even if medical tape is attached, the needle is prone to shaking and swinging due to the movement, and in severe cases it may slip out of the body. Based on the above analysis, the inventor added a fixed structure to the drainage end of the ascites that penetrates the patient's body.

[0030] like Figure 1-4 As shown, in one embodiment of a liver ascites drainage end fixing device of the present application, the device comprises:

[0031] A fixing assembly, the fixing assembly comprises a circular chassis 1 with a certain thickness and a through hole in the middle, an outer ring 7 and an inner ring 13 are arranged at the right end of the chassis 1, a cavity is arranged between the outer ring 7 and the inner ring 13, and the inner diameter of the inner ring 13 is greater than or equal to the inner diameter of the through hole in the middle of the chassis 1; at least two telescopic rods 3 are arranged between the outer ring 7 and the inner ring 13, which pass through the two and can move circularly toward the inner ring 13; a detachable circular cover 4 is arranged on the outer ring 7, a through hole is arranged in the middle of the circular cover 4, a rotatable circular plate 5 is arranged in the through hole, and a sloped gradual card block 14 corresponding to the number of the telescopic rods 3 is arranged at the bottom of the circular plate 5, the sloped gradual card block 14 is arranged in the cavity between the outer ring 7 and the inner ring 13, and a bayonet 141 is arranged on the sloped gradual card block 14, which can clamp the telescopic rod 3 and control the telescopic rod 3 to move toward the middle of the chassis 1;

[0032] The drainage needle comprises a needle rod and a needle plug 8, such as Figure 2 As shown, the needle rod is arranged at the left end of the needle bolt 8; the needle bolt 8 is arranged in the inner ring 13, the side wall of the needle bolt 8 is provided with a slot 81 matching the end of the telescopic rod 3, and the outer wall of the middle part of the needle bolt 8 is provided with a flange 82;

[0033] And a docking assembly, which is arranged at the end of the needle bolt 8 away from the needle rod, the docking assembly includes a sleeve 10, the sleeve 10 is clamped on the needle bolt 8, the inner wall of the sleeve 10 is provided with an inner ring 101 in contact with the end face of the needle bolt 8, the function of the inner ring 101 is to limit the excessive movement of the needle bolt 8 to the right, and at the same time form a certain sealing effect with the right end face of the needle bolt 8, and the hepatic ascites flows into the sleeve from the inner ring 101 after passing through the drainage needle; the outer wall of the sleeve 10 is provided with a pair of movable claws 11, the claw head 111 at the left end of the claw 11 is in the shape of an inverted hook, fixed on the flange 82 of the outer wall of the middle part of the needle bolt 8, more precisely, the hook surface of the claw head 111 is in contact with the left end face of the flange 82; the claw 11 is movably connected with a fixed circular sleeve 9 at one end relative to the claw head 111, and the inner wall of the other end of the fixed circular sleeve 9 is movably connected to the outer wall of the sleeve 10.

[0034] The chassis 1 is made of hard plastic, and a sticky layer is provided at the bottom thereof. The material of the sticky layer can refer to that used for the stoma chassis 1. After the puncture point is determined by color Doppler ultrasound, the chassis 1 is attached to the puncture point through the sticky layer so that the through hole of the chassis 1 covers the puncture point.

[0035] The outer ring 7 and the round cover 4 are connected by threads. Specifically, the outer wall of the outer ring 7 is provided with threads, and the inner wall of the round cover 4 is provided with internal threads matching the threads of the outer ring 7. After the round cover 4 is installed, the outer ring 7 will be higher, which may affect the puncture. Therefore, after the puncture, the round cover 4 is installed to avoid blocking the puncture line of sight.

[0036] The outer ring 7 and the inner ring 13 have coaxial through holes on their sides, the telescopic rod 3 is arranged in the coaxial through holes in the outer ring 7 and the inner ring 13 , and a shoulder is provided on the outer wall of the telescopic rod 3 between the outer ring 7 and the inner ring 13 .

[0037] The outer surface of the ramp-type gradual change block 14 matches the inner surface of the outer ring 7, and the inner surface is arc-shaped and gradually extends toward the middle of the circular plate 5. The outer surface and the inner surface of the ramp-type gradual change block 14 are finally connected to a cylindrical rod, such as Figure 5 As shown, the sloped gradual change block 14 is roughly in the shape of a comma when viewed from the right side.

[0038] Combination Figure 5 and Figure 6 As shown, when the slope-type gradual change block 14 moves clockwise, its outer surface moves along the trajectory of the inner surface of the outer ring 7, and the bayonet 141 will clamp the outer wall of the telescopic rod 3, so that the inner wall of the slope-type gradual change block 14 contacts the shoulder of the telescopic rod 3. The slope-type gradual change block 14 is continuously rotated, and the bayonet 141 is clamped deeper, and its inner wall gradually extends toward the middle of the circular plate 5, which will squeeze the shoulder, so that the telescopic rod 3 moves toward the middle of the inner ring 13, and finally the inner end of the telescopic rod 3 is clamped into the clamping groove 81 of the needle plug 8, fixing the drainage needle, reducing its shaking and preventing it from excessive puncture or slipping. When the telescopic rod 3 is released, the slope-type gradual change block 14 is rotated counterclockwise, and the shoulder of the telescopic rod 3 is not squeezed by the slope-type gradual change block 14. The outer end of the telescopic rod 3 is pulled on the side wall of the outer ring 7, and the inner end of the telescopic rod 3 leaves the clamping groove 81 of the needle plug 8.

[0039] The ramp-type gradual change block 14 is driven by the rotation of the circular plate 5. Figure 2 As shown, the side wall of the circular plate 5 is provided with an annular groove, which is installed with clearance fit on the inner wall of the through hole in the middle of the circular cover 4. The middle of the circular cover 4 is also provided with a through hole for the drainage needle to pass through.

[0040] The inner diameter of the through hole in the middle of the circular cover 4 is slightly smaller than the inner diameter of the outer circular ring 7, and the height of the inner circular ring 13 is slightly lower than the height of the outer circular ring 7. When the circular cover 4 is installed on the outer circular ring 7, the top surface of the inner wall of the circular cover 4 contacts the top surface of the outer circular ring 7, and the circular plate 5 is not subject to corresponding constraints or interference, so it can rotate.

[0041] In order to facilitate driving the circular plate 5 to rotate, a corresponding semi-arc-shaped rotating hole 51 is opened on the right end surface of the circular plate 5. The medical staff puts the fingertips in the rotating hole 51, and with the restriction of the rotating hole 51, the circular plate 5 can be easily rotated.

[0042] The function of the clamping claw 11 is to connect the sleeve 10 and the pintle 8 together. In order to clamp the clamping claw 11 on the flange 82 of the pintle 8, the clamping claw 11 itself is an arc-shaped strip plate with a certain width, and a claw head 111 is provided at the left end thereof, and a kneading portion 112 is provided at the right end of the clamping claw 11. The kneading portion 112 is an arc-shaped flange inclined to the upper right, and its left end is connected to the right end of the clamping claw 11, and the right end is bent and inclined to the lower left ( Figure 3 The kneading part 112 shown below is arranged symmetrically with the aforementioned kneading part 112 , and the right end of the kneading part 112 is bent and tilted toward the lower left, and a movable ring 113 is connected to the end.

[0043] The kneading portion 112 is pinched with fingers, and the claw head 111 of the claw 11 will open. Then, the left end of the sleeve 10 is inserted into the left end surface of the needle bolt 8, and the kneading portion 112 is released, and the claw head 111 will be stuck on the left end surface of the flange 82.

[0044] An annular groove is formed on the outside of the sleeve 10, and the movable ring 113 is disposed in the annular groove. The length of the annular groove is longer than that of the movable ring 113, so that the movable ring 113 has a certain movable stroke.

[0045] The function of the fixed sleeve 9 is to limit and drive the movement of the claw 11. The left end face of the fixed sleeve 9 is provided with an inner flange 91, and the outer wall of the movable ring 113 is provided with an escape groove for placing the inner flange 91. The inner wall of the left end of the fixed sleeve 9 is provided with an internal thread, and the outer wall of the sleeve 10 corresponding to the fixed sleeve 9 is provided with an external thread. The fixed sleeve 9 rotates clockwise to move rightward, and the claw 11 is driven to move rightward as a whole through its inner flange 91. The head of the claw 11 drives the flange 82 to move the pintle 8 to the right and fit closely with the inner ring 101 of the sleeve 10.

[0046] In order to improve the sealing degree between the pintle 8 and the inner ring 101 of the sleeve 10 , a rubber gasket 12 is provided between the inner ring 101 of the sleeve 10 and the pintle 8 .

[0047] When using the fixing device, the puncture point is determined with the help of color ultrasound, and then the chassis 1 of the fixing component is adhered to the puncture point through the adhesive layer. According to the actual situation, a syringe or a drainage tube 6 is connected to the right end of the docking component (the present embodiment shows the connection as a drainage tube 6), and the docking component is connected through the sleeve 10, the claw 11 and the needle plug 8 of the drainage needle, and then the needle tip 2 of the drainage needle is used to puncture the patient's abdomen. Finally, the round cover 4 is tightened on the outer ring 7, and the circular plate 5 is rotated so that the sloped gradual block 14 at the bottom of the circular plate 5 clamps the telescopic rod 3 according to the above-mentioned action, so that the telescopic rod 3 moves to the clamping groove 81 of the needle plug 8, and the drainage needle is fixed. When replacing the syringe or drainage tube 6, the two kneading parts 112 on the claw 11 are pressed, the claw 11 opens, and the docking assembly can leave the needle bolt 8; when installing a new syringe or drainage tube 6, the claw 11 of the docking assembly connected with the new syringe or drainage tube 6 is pressed to open its kneading part 112, and the right end of the sleeve 10 is sleeved on the left end of the needle bolt 8, and the hook surface of the claw head 111 of the claw 11 contacts the left end surface of the flange 82 to form a clamping fixation. If there is a possibility of leakage between the needle bolt 8 and the inner ring 101 of the sleeve 10, it is only necessary to rotate the fixed circular sleeve 9 to move to the right, and the sliding circular ring of the claw 11 will move to the right in the annular groove of the cylinder, driving the needle bolt 8 to move slightly to the right and fit closely with the inner ring 101. If the needle bolt 8 is completely fixed, when the fixed circular sleeve 9 moves to the right, the sleeve 10 moves to the left through the thread drive to make the inner ring 101 and the right end surface of the needle bolt 8 fit closely.

[0048] It should be understood that all the above embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of the present application should be within the protection scope of the present application.

Claims

1. A liver ascites drainage end fixing device, characterized in that: include: The fixing assembly comprises a chassis with a hole in the middle, an outer ring and an inner ring are arranged at the right end of the chassis, a telescopic rod passing through the outer ring and the inner ring and being movable is arranged between the outer ring and the inner ring, a cavity is arranged between the outer ring and the inner ring, a sloped gradual block is arranged in the cavity, and a bayonet is arranged on the sloped gradual block for clamping the telescopic rod and controlling the telescopic rod to move toward the middle of the chassis; The drainage needle comprises a needle rod and a needle plug, the side wall of the needle plug is provided with a slot, and the outer wall of the middle part of the needle plug is provided with a flange; The docking assembly is arranged at the end of the needle bolt away from the needle rod. The docking assembly includes a sleeve. The inner wall of the sleeve is provided with an inner ring that contacts the end surface of the needle bolt. The outer wall of the sleeve is provided with a pair of movable claws, and the claw heads of the claws are fixed on the flange.

2. The fixing device according to claim 1, characterized in that: The bottom of the chassis is provided with an adhesive layer.

3. The fixing device according to claim 1, characterized in that: The outer circular ring is provided with a detachable circular cover, the middle part of the circular cover is provided with a rotatable circular plate, and the sloped gradual change block is arranged at the bottom of the circular plate.

4. The fixing device according to claim 1, characterized in that: The sides of the outer ring and the inner ring are provided with coaxial through holes.

5. The fixing device according to claim 4, characterized in that: The telescopic rod is arranged in a coaxial through hole formed between the outer ring and the inner ring.

6. The fixing device according to claim 5, characterized in that: The outer wall of the telescopic rod located between the outer ring and the inner ring is provided with a shoulder.

7. The fixing device according to claim 1, characterized in that: The outer surface of the sloped gradual block matches the inner surface of the outer ring, and the inner surface is arc-shaped and gradually extends toward the middle of the circular plate.

8. The fixing device according to claim 1, characterized in that: The right end of the clamping claw is provided with a kneading part, and the kneading part is connected with a movable ring.

9. The fixing device according to claim 8, characterized in that: An annular groove is provided on the outside of the sleeve, and the movable ring is arranged in the annular groove.

10. The fixing device according to claim 9, characterized in that: The clamping claw is movably connected to a fixed circular sleeve at one end relative to the claw head, the left end face of the fixed circular sleeve is provided with an inner flange, the outer wall of the movable ring is provided with an avoidance groove for placing the inner flange, and the inner wall of the other end of the fixed circular sleeve is movably connected to the outer wall of the sleeve.

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