A one-way valve for a surgical trocar

Abstract

This utility model discloses a one-way valve for a surgical puncture device, relating to the field of medical equipment technology. It includes an air outlet pipe, with an air inlet pipe connected internally via an air inlet mechanism. The air outlet pipe has an air inlet mechanism inside. A filter mechanism is located at the right end of the air inlet pipe. The filter mechanism includes a connecting pipe fixedly connected to the right end of the air inlet pipe. The inner side wall of the connecting pipe has symmetrically formed L-shaped grooves on its right side, and a hemispherical groove on the right side of the L-shaped grooves. A filter pipe is connected internally to the connecting pipe, and connecting blocks are symmetrically fixedly connected to the outer side wall of the filter pipe. This one-way valve for the surgical puncture device, utilizing the filter pipe, filters the incoming gas, preventing impurities from entering the patient's body, improving safety, avoiding infection, and allowing for easy disassembly and replacement as needed, avoiding the need for additional filtering devices and improving the device's practicality.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically a one-way valve for a surgical puncture device. Background Technology

[0002] In modern medicine, minimally invasive surgical procedures such as laparoscopy and thoracoscopic surgery are being used more and more widely. In order to avoid iatrogenic infection, the number of disposable trocars used in minimally invasive surgical procedures such as laparoscopy and thoracoscopic surgery is also increasing. On the basis of ensuring performance, simplifying the structure and reducing costs have become the direction of trocar improvement. When using trocars, a one-way valve is required.

[0003] Chinese patent CN209899328U discloses a medical one-way valve, including a valve body and a one-way sealing gasket. The valve body has a working channel and an instrument channel. The one-way sealing gasket is installed in the working channel, and the inlet of the working channel is connected to the outlet of the instrument channel. Because the inner diameter of the instrument channel gradually decreases from its inlet to its outlet, the operator can quickly introduce surgical instruments, thus greatly shortening the time required to introduce surgical instruments and effectively improving work efficiency. However, in the above solution, after the gas filling stops, the sealing gasket alone is used for sealing and backflow prevention. When the instrument is moved, the sealing gasket is prone to loosening, causing air leakage and affecting the sealing performance. Utility Model Content

[0004] The purpose of this invention is to provide a one-way valve for a surgical puncture device to solve the problem of poor sealing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a one-way valve for a surgical puncture device, including an air outlet pipe, wherein an air inlet pipe is connected to the interior of the air outlet pipe via an air inlet mechanism, and an air inlet mechanism is provided inside the air outlet pipe;

[0006] A filter mechanism is provided at the right end of the air intake pipe. The filter mechanism includes a connecting pipe fixedly connected to the right end of the air intake pipe. The inner side wall of the connecting pipe has symmetrically formed L-shaped grooves on the right side. A hemispherical groove is formed on the right side of the L-shaped groove. A filter pipe is connected inside the connecting pipe. A connecting block is symmetrically fixedly connected to the outer side wall of the filter pipe. A hemispherical block is fixedly connected to the right side of the connecting block. A handle is fixedly connected to the right side of the filter pipe. A third sealing ring is fixedly connected to the outer side wall of the filter pipe to filter the delivered air.

[0007] Preferably, the hemispherical block is made of elastic rubber, and the connecting block penetrates the outer wall of the third sealing ring.

[0008] Preferably, the air intake mechanism includes a retaining ring, which is fixedly connected to the left side of the inner cavity of the air outlet pipe. A connecting spring is fixedly connected to the right side of the retaining ring, and a connecting ring is fixedly connected to the right end of the connecting spring. A baffle is fixedly connected to the right side of the connecting ring. Air intake holes are symmetrically opened through the outer wall of the baffle. A threaded pipe is fixedly connected to the outer wall of the air intake pipe. A slot is opened on the right side of the air outlet pipe. A locking block is connected inside the slot. A knob is fixedly connected to the right side of the locking block for easy automatic opening and closing, and easy locking when closed to prevent air leakage.

[0009] Preferably, an L-shaped rod is symmetrically fixedly connected to the right side of the outer wall of the threaded tube, and a limiting plate is symmetrically fixedly connected to the outer wall of the air outlet tube. The L-shaped rod passes through the left side of the limiting plate, and the L-shaped rod and the limiting plate are slidably connected to limit the threaded tube.

[0010] Preferably, a first sealing ring is fixedly connected to the right side of the outer wall of the air intake pipe, and the outer wall of the first sealing ring is tightly fitted with the inner wall of the air outlet pipe to ensure the seal between the air intake pipe and the air outlet pipe.

[0011] Preferably, a second sealing ring is fixedly connected to the outer wall of the baffle, and the outer wall of the second sealing ring is tightly fitted to the inner wall of the air intake pipe. A through hole is provided on the outer side of the second sealing ring corresponding to the position of the air intake hole to ensure the seal between the baffle and the air intake pipe.

[0012] Preferably, the knob is threaded to the outer wall of the threaded tube, and the outer wall of the knob is provided with anti-slip texture to facilitate rotating the knob and moving the threaded tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this application, the connecting block is located inside the L-shaped groove, so that the filter tube is located inside the connecting tube. Rotating the filter tube causes the connecting block to deflect inside the L-shaped groove, squeezing and deforming the hemispherical block. When the hemispherical block is aligned with the hemispherical groove, the hemispherical block resets and snaps into place, thus completing the fixation. The filter tube is used to filter the incoming gas, preventing impurities from entering the patient's body, improving the safety of use, avoiding infection, and the filter tube is easy to disassemble and replace as needed, avoiding the need for additional filtration devices and improving the practicality of the device.

[0015] 2. In this application, when ventilation is initiated, the gas compresses the baffle, causing the baffle to move the connecting ring into the outlet pipe, compressing the connecting spring. This positions the air inlet inside the outlet pipe, allowing gas to enter the baffle and then the outlet pipe. When ventilation is not initiated, the connecting spring resets the baffle, stopping air intake. This achieves automatic opening and closing, improving the practicality of the device. Simultaneously, rotating the knob moves the threaded tube, compressing the connecting ring and the connecting spring. The reaction force of the connecting spring presses the connecting ring tightly against the threaded tube, preventing gas backflow, avoiding leakage, and preventing loosening caused by moving the device, which could lead to poor sealing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connecting ring structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the shield structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the card block structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the filter mechanism of this utility model.

[0021] The following are the labeling elements in the diagram: 100, exhaust pipe; 200, intake pipe; 210, first sealing ring; 300, intake mechanism; 310, retaining ring; 320, connecting spring; 330, connecting ring; 340, baffle; 341, intake hole; 342, second sealing ring; 350, threaded pipe; 360, slot; 361, locking block; 370, knob; 380, L-shaped rod; 390, limiting plate; 400, filter mechanism; 410, connecting pipe; 420, L-shaped groove; 430, hemispherical groove; 440, filter pipe; 450, connecting block; 460, hemispherical block; 470, handle; 480, third sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Figures 1-5As shown, this utility model provides a technical solution for a one-way valve of a surgical trocar, including an air outlet pipe 100, an air inlet pipe 200 connected to the inside of the air outlet pipe 100 through an air inlet mechanism 300, and an air inlet mechanism 300 provided inside the air outlet pipe 100.

[0024] Please refer to it again. Figure 5 A filter mechanism 400 is provided at the right end of the intake pipe 200. The filter mechanism 400 includes a connecting pipe 410 fixedly connected to the right end of the intake pipe 200. An L-shaped groove 420 is symmetrically formed on the right side of the inner wall of the connecting pipe 410, and a hemispherical groove 430 is formed on the right side of the L-shaped groove 420. A filter pipe 440 is connected inside the connecting pipe 410. A connecting block 450 is symmetrically fixedly connected to the outer wall of the filter pipe 440. A hemispherical block 460 is fixedly connected to the right side of the connecting block 450. A handle 470 is fixedly connected to the right side of the filter pipe 440. A third sealing ring 480 is fixedly connected to the outer wall of the filter pipe 440. The hemispherical block 460 is made of elastic rubber, and the connecting block 450 passes through it. The outer wall of the third sealing ring 480; the connecting block 450 is located inside the L-shaped groove 420, so that the filter tube 440 is located inside the connecting tube 410. Rotating the filter tube 440 causes the connecting block 450 to deflect inside the L-shaped groove 420, squeezing the hemispherical block 460 and deforming it. When the hemispherical block 460 is aligned with the hemispherical groove 430, the hemispherical block 460 resets and snaps in place, completing the fixation. The filter tube 440 is used to filter the incoming gas, preventing impurities from entering the patient's body, improving the safety of use, avoiding infection, and the filter tube 440 is easy to disassemble and replace as needed, avoiding the need for additional filtering devices and improving the practicality of the device.

[0025] Please refer to it again. Figure 1-4The intake mechanism 300 includes a retaining ring 310, which is fixedly connected to the left side of the inner cavity of the exhaust pipe 100. A connecting spring 320 is fixedly connected to the right side of the retaining ring 310, and a connecting ring 330 is fixedly connected to the right end of the connecting spring 320. A baffle 340 is fixedly connected to the right side of the connecting ring 330. An intake hole 341 is symmetrically opened through the outer wall of the baffle 340. A threaded pipe 350 is fixedly connected to the outer wall of the intake pipe 200. A slot 360 is opened on the right side of the exhaust pipe 100, and a locking block 361 is connected inside the slot 360. A knob 370 is fixedly connected to the right side of 361; an L-shaped rod 380 is symmetrically fixedly connected to the right side of the outer wall of the threaded pipe 350; a limiting plate 390 is symmetrically fixedly connected to the outer wall of the air outlet pipe 100; the L-shaped rod 380 passes through the left side of the limiting plate 390, and the L-shaped rod 380 and the limiting plate 390 are slidably connected; a first sealing ring 210 is fixedly connected to the right side of the outer wall of the air inlet pipe 200, and the outer wall of the first sealing ring 210 is tightly fitted to the inner wall of the air outlet pipe 100; a second sealing ring 342 is fixedly connected to the outer wall of the baffle 340. Furthermore, the outer wall of the second sealing ring 342 is tightly fitted to the inner wall of the air inlet pipe 200, and a through hole is provided on the outer side of the second sealing ring 342 corresponding to the position of the air inlet 341; the knob 370 is screwed to the outer wall of the threaded pipe 350, and the outer wall of the knob 370 is provided with anti-slip texture; when air is supplied, the gas compresses the baffle 340, causing the baffle 340 to move the connecting ring 330 into the air outlet pipe 100, compressing the connecting spring 320, so that the air inlet 341 is located inside the air outlet pipe 100, thereby allowing gas to enter the baffle. After entering the cover 340, it enters the air outlet pipe 100. When air is not flowing, the resetting of the connecting spring 320 causes the cover 340 to reset, stopping the air intake, thus achieving automatic opening and closing and improving the practicality of the device. At the same time, by rotating the knob 370, the threaded tube 350 moves, squeezing the connecting ring 330 and compressing the connecting spring 320. Through the reaction force of the connecting spring 320, the connecting ring 330 presses the threaded tube 350 tightly, thereby preventing gas backflow, avoiding air leakage, and preventing the moving device from loosening and causing poor sealing.

[0026] In use, the following steps are taken: First, the connecting block 450 is embedded in the L-shaped groove 420, so that the filter tube 440 is located inside the connecting tube 410. The handle 470 is then squeezed and the filter tube 440 is rotated, causing the connecting block 450 to deflect within the L-shaped groove 420, thus compressing the hemispherical block 460 and deforming it. When the hemispherical block 460 aligns with the hemispherical groove 430, it resets and snaps into place, completing the fixation. The device is then installed on a ventilation device. During ventilation, the gas impacts the baffle 3. The pressure applied by the 40 mechanism causes the baffle 340 to move the connecting ring 330 into the outlet pipe 100, compressing the connecting spring 320. At this point, the second sealing ring 342 separates from the inlet pipe 200, opening the inlet port 341. Gas enters the baffle 340 through the inlet port 341, and then enters the outlet pipe 100 through the hole in the middle of the connecting ring 330, completing the air intake. When airflow is blocked, gas intake stops, stopping the pressure on the baffle 340. The resetting of the connecting spring 320 then... The baffle 340 resets, allowing the second sealing ring 342 to re-enter the intake pipe 200 and re-seal. Then, by rotating the knob 370, the L-shaped rod 380, in conjunction with the limiting plate 390, limits the threaded pipe 350. Therefore, when the knob 370 rotates, the threaded pipe 350 moves, causing the intake pipe 200 to move and compressing the connecting ring 330, thus compressing the connecting spring 320. The reaction force of the connecting spring 320 then presses the connecting ring 330 tightly against the threaded pipe 350. 0, thereby increasing the pressure to make the device tightly sealed and prevent air leakage. After use, disassemble the device, pinch the handle 470, rotate the filter tube 440 in the opposite direction to make the hemispherical groove 430 squeeze the hemispherical block 460, deform the hemispherical block 460, and move the hemispherical block 460 out of the hemispherical groove 430 so that the connecting block 450 is located at the opening of the L-shaped groove 420. Pull the handle 470 to pull out the filter tube 440, collect and discard it for easy installation of a new filter tube 440 for the next use.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A one-way valve for a surgical trocar, comprising an air outlet tube (100), wherein an air inlet tube (200) is connected internally to the air outlet tube (100) via an air inlet mechanism (300), characterized in that: An air intake mechanism (300) is provided inside the air outlet pipe (100); A filter mechanism (400) is provided at the right end of the air intake pipe (200). The filter mechanism (400) includes a connecting pipe (410) fixedly connected to the right end of the air intake pipe (200). An L-shaped groove (420) is symmetrically opened on the right side of the inner side wall of the connecting pipe (410). A hemispherical groove (430) is opened on the right side of the L-shaped groove (420). A filter pipe (440) is connected inside the connecting pipe (410). A connecting block (450) is symmetrically fixedly connected to the outer side wall of the filter pipe (440). A hemispherical block (460) is fixedly connected to the right side of the connecting block (450). A handle (470) is fixedly connected to the right side of the filter pipe (440). A third sealing ring (480) is fixedly connected to the outer side wall of the filter pipe (440).

2. The one-way valve of a surgical trocar according to claim 1, characterized in that: The hemispherical block (460) is made of elastic rubber, and the connecting block (450) penetrates the outer wall of the third sealing ring (480).

3. The one-way valve of a surgical trocar according to claim 1, characterized in that: The air intake mechanism (300) includes a retaining ring (310), which is fixedly connected to the left side of the inner cavity of the air outlet pipe (100). A connecting spring (320) is fixedly connected to the right side of the retaining ring (310). A connecting ring (330) is fixedly connected to the right end of the connecting spring (320). A baffle (340) is fixedly connected to the right side of the connecting ring (330). An air intake hole (341) is symmetrically opened through the outer wall of the baffle (340). A threaded pipe (350) is fixedly connected to the outer wall of the air intake pipe (200). A slot (360) is opened on the right side of the air outlet pipe (100). A locking block (361) is connected inside the slot (360). A knob (370) is fixedly connected to the right side of the locking block (361).

4. The one-way valve of a surgical trocar according to claim 3, characterized in that: An L-shaped rod (380) is symmetrically fixedly connected to the right side of the outer wall of the threaded pipe (350), and a limiting plate (390) is symmetrically fixedly connected to the outer wall of the air outlet pipe (100). The L-shaped rod (380) passes through the left side of the limiting plate (390), and the L-shaped rod (380) and the limiting plate (390) are slidably connected.

5. The one-way valve of a surgical trocar according to claim 3, characterized in that: The right side of the outer wall of the air inlet pipe (200) is fixedly connected to a first sealing ring (210), and the outer wall of the first sealing ring (210) is tightly fitted to the inner wall of the air outlet pipe (100).

6. The one-way valve of a surgical trocar according to claim 3, characterized in that: The outer wall of the baffle (340) is fixedly connected with a second sealing ring (342), and the outer wall of the second sealing ring (342) is tightly fitted with the inner wall of the air inlet pipe (200). A through hole is provided on the outer side of the second sealing ring (342) corresponding to the position of the air inlet (341).

7. The one-way valve of a surgical trocar according to claim 3, characterized in that: The knob (370) is threaded to the outer wall of the threaded tube (350), and the outer wall of the knob (370) is provided with anti-slip texture.

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