Puncture trocar fixing device for ascites ultrafiltration concentration reinfusion

Abstract

The utility model discloses a puncture trocar fixing device for ascites ultrafiltration concentration reinfusion. The puncture trocar fixing device comprises a reinfusion system, a catheter, a puncture needle, a fixing mechanism and an application. The plaster is characterized in that the plaster body is pasted on the skin, a clamping groove is formed in the upper portion of the plaster body, and a fixing mechanism is detachably installed on the clamping groove; the fixing mechanism comprises an arch frame detachably connected with the clamping groove, limiting grooves formed in the arch frame at the interval of 1 cm, sliding grooves formed in the middles of the inner sides of the limiting grooves, and limiting cylinders installed in the sliding grooves in a sliding mode. The puncture needle is detachably installed in the limiting cylinder, one end of the puncture needle is connected with the catheter, and the other end of the catheter is connected with the feedback system. The puncture needle can be fixed in the long-time treatment process, the puncture needle is prevented from being disengaged, swung and broken, and medical staff can be assisted in puncturing.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to a puncture trocar fixing device for ascites ultrafiltration, concentration and reinfusion. Background Art

[0002] Ascites is one of the most common complications in patients with cirrhosis. In order to relieve the pressure in the abdominal cavity, ascites ultrafiltration, concentration and re-infusion is often used to drain the ascites. That is, after filtering out excess ascites and toxins, proteins and other substances that are useful to the human body are concentrated and re-infused into the abdominal cavity. When facing patients with a large amount of ascites, problems such as long treatment time, patient tolerance, and body movement cause the puncture needle to easily fall out during long-term treatment, resulting in treatment failure, ascites leakage and other shortcomings.

[0003] Prior art, such as Chinese utility model patent with publication number CN117643493A, discloses "a puncture needle fixing device", which fixes the puncture needle after puncture by means of a clamping unit fixed on a patch; this fixing method has defects, because a Z-shaped needle insertion method is often used to avoid leakage of ascites during ascites puncture, and it is difficult for beginners to control the puncture angle when performing puncture, which makes it difficult to seal the ascites in the wound after puncture, resulting in ascites leakage. Furthermore, when changing the puncture angle, an unreasonable puncture angle is likely to expand the wound range and increase the patient's pain.

[0004] In addition, ascites ultrafiltration and reinfusion requires two puncture needles, one for discharge and the other for reinfusion; after the puncture, the puncture needle needs to be covered with gauze and then pulled out to prevent ascites leakage from causing skin maceration. Utility Model Content

[0005] The utility model aims to provide a puncture cannula needle fixing device for ascites ultrafiltration concentration and reinfusion, which can fix the puncture needle during long-term treatment to prevent the puncture needle from falling out, swinging or breaking, and can assist medical personnel in puncturing.

[0006] In order to achieve the above technical effects, the utility model is realized by the following technical solutions: a puncture trocar fixing device for ascites ultrafiltration concentration reinfusion, comprising a reinfusion system, a catheter, a puncture needle, a fixing mechanism and a patch; characterized in that the patch is pasted on the skin, a card slot is provided above the patch, and a fixing mechanism is detachably installed on the card slot;

[0007] The fixing mechanism includes an arch frame for disassembling the connecting slot, a limiting groove arranged on the arch frame with an interval of 1 cm, a slide groove arranged in the middle of the inner side of the limiting groove, and a limiting cylinder slidably installed inside the slide groove;

[0008] The puncture needle is detachably mounted inside the limiting cylinder, one end of the puncture needle is connected to the catheter, and the other end of the catheter is connected to the reinfusion system.

[0009] Preferably, the limiting cylinder includes an outer cylinder, a slider is fixedly installed in the middle of the outer cylinder, the slider is slidably connected inside the slide groove, a thread is arranged at the upper end of the outer cylinder, a nut matching the thread is installed on the outer cylinder, a release chamber is arranged inside the lower end of the outer cylinder, a clamp is sleeved inside the release chamber, and a spring is sleeved outside the clamp.

[0010] Preferably, the clamp is made of plastic material; the clamp includes a retaining ring sleeved in the release cavity, a telescopic tube fixedly installed at the lower end of the retaining ring, and a plurality of restraining claws evenly distributed at the lower end of the telescopic tube; the interior of the restraining claw is funnel-shaped when closed; the spring is sleeved on the outside of the telescopic tube; the telescopic tube is concentric with the retaining ring and has the same inner diameter; the outer diameter of the retaining ring is larger than the outer diameter of the telescopic tube.

[0011] Preferably, the inner diameter of the release chamber is larger than the inner diameter of the outer tube, the inner diameter of the retaining ring is consistent with the inner diameter of the outer tube, the outer diameter of the retaining ring is matched with the inner diameter of the release chamber, and the diameter of the spring is smaller than the outer diameter of the retaining ring.

[0012] Preferably, the center of the arch is located 1 cm below the patch; an angle scale is provided on the upper surface of the arch, and a plurality of buckles are fixedly installed at the ends of both sides of the arch; the buckles are adapted to the slots.

[0013] Preferably, the patch is an elliptical structure, with a circular through hole in the middle, an annular positioning ring outside the circular through hole, a plurality of plastic card slots symmetrically arranged on both sides of the positioning ring, and butterfly buckles at both ends of the patch, and the butterfly buckles are arranged in the same direction as the card slots.

[0014] Compared with the related art, the puncture trocar fixing device for ascites ultrafiltration concentration reinfusion provided by the utility model has the following beneficial effects:

[0015] 1. The utility model sets an arch frame, utilizes the limit groove and the angle scale on the arch frame, so as to realize the accurate control of the sliding of the limit cylinder in the limit groove, and then changes the needle insertion angle of the puncture needle through the clamping claw inside the limit cylinder, so that the needle insertion angle of the puncture needle can be accurately controlled;

[0016] 2. The utility model provides a buckle, which cooperates with the slot on the top of the dressing, so that the fixing mechanism is fixed on the top of the dressing through the buckle, and the fixing mechanism can be separated when the puncture needle is pulled out, making it more convenient to cover the gauze;

[0017] 3. The utility model cooperates with the limit tube and the clamping claw so that the puncture needle can only enter the clamping claw in one direction. When the puncture needle moves in the opposite direction, it will be clamped and fixed, making it difficult to fall out, thereby ensuring the stability of the puncture needle during long-term treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is the front view of the utility model;

[0021] Figure 3 It is a schematic diagram of the arch structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the installation relationship between the limit cylinder and the nut of the utility model;

[0023] Figure 5 This is a schematic diagram of the installation relationship between the limit cylinder and the clamping claw of the utility model;

[0024] Figure 6 It is a top view of the limit cylinder and the clamping claw of the utility model;

[0025] Figure 7 It is a schematic diagram of the application structure of the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Reinfusion system; 2. Catheter; 3. Puncture needle; 4. Fixing mechanism; 41. Arch; 411. Limiting groove; 412. Slide groove; 413. Buckle; 42. Limiting cylinder; 421. Outer cylinder; 422. Slider; 423. Thread; 424. Release chamber; 43. Clamp; 431. Retaining ring; 432. Telescopic tube; 433. Restraining claw; 44. Spring; 45. Nut; 5. Applicator; 51. Positioning ring; 52. Slot; 53. Butterfly buckle. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] Example 1

[0030] See also Figures 1 to 7 As shown, a puncture trocar fixing device for ascites ultrafiltration concentration reinfusion includes a reinfusion system 1, a catheter 2, a puncture needle 3, a fixing mechanism 4 and a patch 5; the characteristics are: the patch 5 is pasted on the skin, a card slot 52 is provided above the patch 5, and the fixing mechanism 4 is detachably mounted on the card slot 52;

[0031] The fixing mechanism 4 includes an arch frame 41 for disassembling the connecting slot 52, a limiting slot 411 arranged on the arch frame 41 with an interval of 1 cm, a slide slot 412 arranged in the middle of the inner side of the limiting slot 411, and a limiting cylinder 42 slidably installed in the slide slot 412;

[0032] The puncture needle 3 is detachably mounted inside the limiting cylinder 42 , one end of the puncture needle 3 is connected to the catheter 2 , and the other end of the catheter 2 is connected to the reinfusion system 1 .

[0033] The limiting cylinder 42 includes an outer cylinder 421, a slider 422 is fixedly installed in the middle of the outer cylinder 421, and the slider 422 is slidably connected inside the slide groove 412. The upper end of the outer cylinder 421 is provided with a thread 423, and a nut 45 adapted to the thread 423 is installed on the outer cylinder 421. A release chamber 424 is provided inside the lower end of the outer cylinder 421, and a clamping jaw 43 is sleeved inside the release chamber 424, and a spring 44 is sleeved outside the clamping jaw 43. The clamping jaw 43 can slide in the release chamber 424, and the spring 44 outside the clamping jaw 43 is clamped in the release chamber 424, so that it can always provide an upward thrust for the clamping jaw 43, thereby always keeping the clamping jaw 43 in a clamped state.

[0034] The clamping claw 43 is made of plastic material; the clamping claw 43 includes a retaining ring 431 sleeved in the release cavity 424, a telescopic tube 432 fixedly mounted at the lower end of the retaining ring 431, and a plurality of restraining claws 433 evenly distributed at the lower end of the telescopic tube 432; the interior of the restraining claw 433 is funnel-shaped after closing; the spring 44 is sleeved on the outside of the telescopic tube 432; the telescopic tube 432 is concentric with the retaining ring 431 and has the same inner diameter; the outer diameter of the retaining ring 431 is larger than the outer diameter of the telescopic tube 432. The restraining claw 433 is funnel-shaped in the closed state, so that the puncture needle 3 can be pushed out of the limiting cylinder 42 after entering the retaining ring 431 and the telescopic tube 432 which are concentric and have the same inner diameter, so that the restraining claw 433 made of plastic material can be opened to the surroundings to allow the puncture needle 3 to pass through, and when the telescopic tube 432 moves upward, the restraining claw 433 contracts to clamp the puncture needle 3.

[0035] The inner diameter of the release chamber 424 is larger than the inner diameter of the outer tube 421, the inner diameter of the retaining ring 431 is consistent with the inner diameter of the outer tube 421, the outer diameter of the retaining ring 431 is matched with the inner diameter of the release chamber 424, and the diameter of the spring 44 is smaller than the outer diameter of the retaining ring 431. The lower part of the spring 44 is clamped by the release chamber 424, and the upper part of the spring 44 is clamped by the retaining ring 431, so that the spring 44 can push the retaining ring 431 to slide in the release chamber 424 and always provide an upward thrust for the retaining ring 431, so that the binding claw 433 always maintains a clamping state, and can clamp the puncture needle 3 during a long treatment process.

[0036] The center of the arch frame 41 is located 1 cm below the dressing 5; the upper surface of the arch frame 41 is provided with an angle scale, and multiple buckles 413 are fixedly installed at the ends of both sides of the arch frame 41; the buckles 413 are adapted to the card slots 52. When the Z-shaped puncture method is used for puncture, the scale on the arch frame 41 can provide the operator with an accurate puncture angle, and the rotation center of the puncture needle 3 is located 1 cm below the skin, which can avoid damage to organs and enlargement of the wound on the skin when the puncture needle 3 swings as much as possible; the setting of the buckle 413 allows the arch frame 41 to be separated from the dressing 5, which not only provides convenience for covering the gauze when the puncture needle 3 is pulled out, but also enables the repeated use of the fixing mechanism 4.

[0037] The dressing 5 is an elliptical structure, with a circular through hole in the middle of the dressing 5, an annular positioning ring 51 outside the circular through hole, multiple plastic card slots 52 symmetrically arranged on both sides of the positioning ring 51, and butterfly buckles 53 arranged at both ends of the dressing 5, and the butterfly buckles 53 are arranged in the same direction as the card slots 52. The elliptical structure is more convenient when tearing off the dressing 5, the annular positioning ring 51 defines the puncture range, and at the same time makes the fixing mechanism 4 installed on the dressing 5 more stable, ensuring the stability during the treatment process, and the card slots 52 and the butterfly buckles 53 are located in the same direction to reduce the bending degree of the catheter 2 during the fixing process.

[0038] Example 2

[0039] The limiting grooves 411 provided in the present invention are 1 cm apart, which can effectively reduce the skin immersion area.

[0040] The butterfly buckles 53 of the utility model are arranged on both sides, and each individual butterfly buckle 53 can fix two catheters 2 at the same time.

[0041] The thread 423 at the upper end of the outer cylinder 421 of the utility model is arranged in the slide groove 412 , which can ensure that the nut 45 is interference fit with the surface of the limiting groove 411 after being tightened, so as to fix the limiting cylinder 42 .

[0042] Example 3

[0043] Working principle: When using the device, the user first sticks the patch 5 on the abdomen and makes the puncture position inside the positioning ring 51, and then cooperates with the buckle 413 on the arch frame 41 and the slot 52 on the positioning ring 51 to fix the fixing mechanism 4 on the patch 5. Then the operator passes the puncture needle 3 through the clamp 43. When the puncture needle 3 needs to change the puncture direction, the operator drives the puncture needle 3 to rotate around the center of the arch frame 41 through the limiting cylinder 42 outside the clamp 43, and then accurately adjusts the inclination angle of the puncture needle 3 according to the scale on the arch frame 41. After the puncture is completed, the operator rotates the nut 45 so that the nut 45 cooperates with the thread 423 on the upper side of the outer cylinder 421, and then fixes the limiting cylinder 42 on the arch frame 41, so that the puncture angle of the puncture needle 3 is fixed. The operation of the other puncture needle 3 is the same. The catheter 2 on the fixed puncture needle 3 is fixed by the butterfly buckle 53, and the fixed catheter 2 is connected to the reinfusion system 1 for treatment.

[0044] After the treatment is completed, the operator releases the restriction of the nut 45 on the limiting cylinder 42, drives the clamp 43 through the limiting cylinder 42, so that the puncture needle 3 is located on the same scale, and releases the connection between the dressing 5 and the fixing mechanism 4 through the buckle 413 and the slot 52, and removes the puncture needle 3 together with the fixing mechanism 4 after covering the puncture needle 3 with the restraint.

Claims

1. A puncture trocar fixing device for ascites ultrafiltration concentration reinfusion, comprising a reinfusion system (1), a catheter (2), a puncture needle (3), a fixing mechanism (4) and a patch (5); characterized in that: The patch (5) is adhered to the skin, a slot (52) is provided above the patch (5), and a fixing mechanism (4) is detachably mounted on the slot (52); The fixing mechanism (4) comprises an arch frame (41) for disassembling the connecting slot (52), a limiting groove (411) arranged on the arch frame (41) with a spacing of 1 cm, a sliding groove (412) arranged in the middle of the inner side of the limiting groove (411), and a limiting cylinder (42) slidably installed inside the sliding groove (412); The puncture needle (3) is detachably mounted inside the limiting cylinder (42); one end of the puncture needle (3) is connected to the catheter (2), and the other end of the catheter (2) is connected to the reinfusion system (1).

2. The device for fixing a puncture trocar for ultrafiltration, concentration and reinfusion of ascites according to claim 1, characterized in that: The limiting cylinder (42) comprises an outer cylinder (421), a slider (422) is fixedly installed in the middle of the outer cylinder (421), and the slider (422) is slidably connected to the inside of the slide groove (412). A thread (423) is arranged at the upper end of the outer cylinder (421), and a nut (45) matched with the thread (423) is installed on the outer cylinder (421). A release chamber (424) is arranged inside the lower end of the outer cylinder (421), a clamping jaw (43) is sleeved inside the release chamber (424), and a spring (44) is sleeved outside the clamping jaw (43).

3. The device for fixing a puncture trocar for ultrafiltration, concentration and reinfusion of ascites according to claim 2, characterized in that: The clamping claw (43) is made of plastic material; the clamping claw (43) comprises a retaining ring (431) sleeved in the release chamber (424), a telescopic tube (432) fixedly mounted at the lower end of the retaining ring (431), and a plurality of restraining claws (433) evenly distributed at the lower end of the telescopic tube (432); the interior of the restraining claw (433) is funnel-shaped when closed; the spring (44) is sleeved on the outside of the telescopic tube (432); the telescopic tube (432) and the retaining ring (431) are concentric and have the same inner diameter; the outer diameter of the retaining ring (431) is greater than the outer diameter of the telescopic tube (432).

4. The device for fixing a puncture trocar for ultrafiltration, concentration and reinfusion of ascites according to claim 2, characterized in that: The inner diameter of the release chamber (424) is larger than the inner diameter of the outer tube (421), the inner diameter of the retaining ring (431) is consistent with the inner diameter of the outer tube (421), the outer diameter of the retaining ring (431) is matched with the inner diameter of the release chamber (424), and the diameter of the spring (44) is smaller than the outer diameter of the retaining ring (431).

5. The device for fixing a puncture trocar for ultrafiltration, concentration and reinfusion of ascites according to claim 2, characterized in that: The center of the arch frame (41) is located 1 cm below the patch (5); an angle scale is provided on the upper surface of the arch frame (41); a plurality of buckles (413) are fixedly installed at the ends of both sides of the arch frame (41); and the buckles (413) are adapted to the clamping grooves (52).

6. The device for fixing a puncture trocar for ultrafiltration, concentration and reinfusion of ascites according to claim 1, characterized in that: The patch (5) is an elliptical structure, with a circular through hole in the middle, an annular positioning ring (51) outside the circular through hole, a plurality of plastic card slots (52) symmetrically arranged on both sides of the positioning ring (51), and butterfly buckles (53) at both ends of the patch (5), the butterfly buckles (53) and the card slots (52) being arranged in the same direction.

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