Puncture outfit

Abstract

The utility model discloses a puncture outfit which comprises a cover body, the bottom of the cover body is sunken upwards to form a mounting cavity, and a first clamping position is arranged in the mounting cavity; the bottom plate is mounted at the bottom of the cover body, a mounting hole and a fixing hole are formed in the bottom plate, the midpoint of the mounting hole coincides with the midpoint of the bottom plate, and a limiting block is arranged on the outer side of the mounting hole; the puncture rod penetrates through the mounting hole, and one end of the puncture rod is fixed to the bottom plate; one end of the puncture knife penetrates through the puncture rod, and the other end of the puncture knife is mounted at the bottom of the mounting cavity; the elastic switch is provided with a first buckle, a first elastic block and a second clamping position matched with the first clamping position, the first clamping position and the second clamping position abut against each other, the first buckle is arranged in the fixing hole in a penetrating mode, one end of the first elastic block is connected with the first buckle, and the other end of the first elastic block abuts against the limiting block; the sealing cap is provided with a first clamping groove matched with the first buckle. And the elastic switch can be stably clamped on the sealing cap.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a trocar. Background Art

[0002] A trocar is a common medical device, mainly used in minimally invasive surgical operations. By using a trocar to pierce the abdominal wall, a passage leading to the abdominal cavity is constructed, so that other minimally invasive medical devices can enter the abdominal cavity for corresponding surgical operations. The structure design of the trocar in the related technology is not reasonable enough. After the user presses the elastic switch, the elastic switch cannot be stably stuck on the sealing cap, resulting in the trocar being unable to cut normally. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a trocar that can stably hold the elastic switch on the sealing cap.

[0004] The trocar according to the first aspect embodiment of the utility model includes:

[0005] A cover body, a mounting cavity is formed by upward depression at the bottom of the cover body, and a first clamping position is arranged inside the mounting cavity;

[0006] A bottom plate, the bottom plate is mounted at the bottom of the cover body, the bottom plate is provided with a mounting hole and a fixing hole, the midpoint of the mounting hole coincides with the midpoint of the bottom plate, and a limiting block is arranged outside the mounting hole;

[0007] A puncture rod, the puncture rod is inserted through the mounting hole, and one end of the puncture rod is fixed to the bottom plate;

[0008] A trocar blade, one end of the trocar blade is inserted through the puncture rod, and the other end of the trocar blade is mounted at the bottom of the mounting cavity;

[0009] An elastic switch, which is provided with a first buckle, a first elastic block and a second clamping position matching the first clamping position, the first clamping position and the second clamping position are in mutual abutment, the first buckle is inserted through the fixing hole, one end of the first elastic block is connected to the first buckle, and the other end of the first elastic block abuts against the limiting block;

[0010] A sealing cap, the sealing cap is provided with a first slot matching the first buckle.

[0011] The trocar according to the embodiment of the present utility model has at least the following beneficial effects: By providing a first elastic block on the first buckle and abutting the other end of the first elastic block against the limiting block, when the user presses the elastic switch or under the action of an external force, the first elastic block will generate a reaction force in the opposite direction, so that the first buckle can be stably stuck in the first card slot. And by arranging the puncture knife in the puncture rod, the moving direction of the puncture knife can be fixed.

[0012] According to some embodiments of the present utility model, it further includes a return spring, the return spring is located between the installation hole and the limiting block, one end of the return spring is connected to the puncture rod, and the other end of the return spring is connected to the bottom of the installation cavity.

[0013] According to some embodiments of the present utility model, an installation groove is further provided at the bottom of the installation cavity, the other end of the puncture knife is installed in the installation groove, the return spring is sleeved outside the installation groove, and the return spring is located between the installation groove and the limiting block.

[0014] According to some embodiments of the present utility model, the puncture rod is provided with a protective cover, one end of the puncture knife is provided with a puncture part, the protective cover is sleeved on the puncture part, and the end of the protective cover matches the puncture part.

[0015] According to some embodiments of the present utility model, the puncture part is a double-edged blade, and the protective cover is provided with a puncture end with a double-edged structure.

[0016] According to some embodiments of the present utility model, the double-edged blade includes a blade body and a blade tip, and the side walls of the blade body and the blade tip are smoothly transitionally connected.

[0017] According to some embodiments of the present utility model, the puncture rod is provided with a second buckle, and the protective cover is provided with a second card slot matching the second buckle.

[0018] According to some embodiments of the present utility model, a convex ring is provided at one end of the puncture rod away from the cover body, and the convex ring inclines inwards along the length direction of the puncture rod.

[0019] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0021] Figure 1 is a schematic structural diagram of the trocar according to the embodiment of the present utility model;

[0022] Figure 2 For Figure 1 the structural schematic diagram of the bottom plate of the trocar shown;

[0023] Figure 3 the partial schematic diagram of the trocar of the embodiment of the present utility model;

[0024] Figure 4 the structural schematic diagram of the sealing cap of the embodiment of the present utility model;

[0025] Figure 5 For Figure 1 the structural schematic diagram of the trocar blade of the trocar shown. Detailed implementation manners

[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation of the present utility model.

[0028] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0029] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0030] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, in an embodiment of the present utility model, the trocar includes a cover body 100, a bottom plate 200, a puncture rod 400, a puncture knife 300, an elastic switch 500, a sealing cap 700, and a return spring 600. A mounting cavity is formed by the upward depression at the bottom of the cover body 100. The bottom plate 200 covers the mounting cavity. An installation hole 210 and a fixing hole 220 are provided on the bottom plate 200. A limiting block 230 is arranged outside the installation hole 210. Among them, the midpoint of the installation hole 210 coincides with the midpoint of the bottom plate 200. The puncture rod 400 passes through the installation hole 210 and is fixed to the bottom plate 200. One end of the puncture knife 300 passes through the puncture rod 400, and the other end of the puncture knife 300 is installed at the bottom of the mounting cavity. By arranging the puncture knife 300 inside the puncture rod 400, the moving direction of the puncture knife 300 can be fixed. The elastic switch 500 is provided with a first buckle 520, a first elastic block 530, and a second buckle 510 that matches the first buckle position 120. The first buckle position 120 and the second buckle position 510 are in mutual contact. The first buckle 520 passes through the fixing hole 220. One end of the first elastic block 530 is connected to the first buckle 520, and the other end of the first elastic block 530 is in contact with the limiting block 230. The sealing cap 700 is provided with a first slot 710 that matches the first buckle 520. By arranging the first elastic block 530 on the first buckle 520 and making the other end of the first elastic block 530 in contact with the limiting block 230, when the user presses the elastic switch 500 or an external force acts, the first elastic block 530 will generate a reverse force, so that the first buckle 520 can be stably stuck in the first slot 710. In addition, when the user presses the elastic switch 500 or an external force acts, the first elastic block 530 will generate a reverse force, which can also make the first buckle 520 stably stuck in the fixing hole 220, preventing the bottom plate 200 from detaching from the cover body 100.

[0031] It should be noted that two first buckle positions 120 are arranged oppositely in the mounting cavity, and two second buckle positions 510 that match the first buckle positions 120 are also arranged. By arranging two first buckle positions 120 and two second buckle positions 510, the loosening of the elastic switch 500 can be avoided, thereby preventing the dislocation of the elastic switch 500.

[0032] It should be noted that two first buckles 520, two fixing holes 220, two first elastic blocks 530, and two first slots 710 are all arranged oppositely. When the user presses the first buckles 520 from both ends, the first elastic blocks 530 will generate reverse forces, so that the first buckles 520 can be stably stuck in the first slots 710. By arranging the first buckles 520, the fixing holes 220, and the first elastic blocks 530 oppositely, the elastic switch 500 can be stably stuck in the first slots 710, and the elastic switch 500 can also be stably stuck in the fixing holes 220.

[0033] It should be noted that a convex ring 410 is provided at one end of the puncture rod 400 away from the cover body 100, and the convex ring 410 is inclined inward along the length direction of the puncture rod 400.

[0034] It can be understood that the puncture device further includes a return spring 600. The return spring 600 is located between the mounting hole 210 and the limiting block 230. One end of the return spring 600 is connected to the puncture rod 400, and the other end of the return spring 600 is connected to the bottom of the mounting cavity. When the user presses the cover body 100, the return spring 600 is compressed, and the puncture blade 300 is pushed out from the puncture rod 400. When the user stops pressing the cover body 100, the return spring 600 resumes, and the puncture blade 300 retracts into the puncture rod 400, effectively improving the safety of the puncture device.

[0035] It should be noted that an installation groove 110 is further provided at the bottom of the mounting cavity. The other end of the puncture blade 300 is installed in the installation groove 110. The return spring 600 is sleeved outside the installation groove 110, and the return spring 600 is located between the installation groove 110 and the limiting block 230. By arranging the return spring 600 between the fixed groove and the limiting block 230, the return spring 600 can be limited to prevent the return spring 600 from being displaced, which may otherwise cause the puncture rod 400 to fail to return to its normal position.

[0036] It should be noted that the puncture rod 400 is further provided with a protective cover 420. One end of the puncture blade 300 is provided with a puncture portion 310. The protective cover 420 is sleeved on the puncture portion 310, and the end of the protective cover 420 matches the puncture portion 310. When the puncture rod 400 compresses the return spring 600, the puncture blade 300 extends out of the protective cover 420, enabling a normal puncture operation. When the pressure at the front end of the puncture rod 400 disappears, the return spring 600 resumes, so that the puncture blade 300 can be hidden in the protective cover 420. By hiding the puncture blade 300 with the protective cover 420, it can not only prevent the puncture blade 300 from being contaminated but also avoid the puncture blade 300 from protruding and accidentally injuring medical staff, ensuring the safety and reliability of the puncture device.

[0037] Refer to Figure 5 , the puncture portion 310 is a double-edged blade, and the protective cover 420 is provided with a puncture end with a double-edged structure. Both the puncture blade 300 and the puncture end adopt a double-edged design, which can accurately reach the puncture position. The double-edged blade is easier to cut muscle, which is beneficial to improving the working performance of the puncture device and thus increasing the success rate of the puncture operation.

[0038] It should be noted that the double-edged blade includes a blade body and a blade tip, and the side walls of the blade body and the blade tip are smoothly transitionally connected. By making the side walls of the blade body and the blade tip smoothly transitionally connected, the shape of the tissue incision can be effectively protected during the puncture process, reducing the degree of tissue damage and making the incised tissue easier to heal. Among them, the blade body and the blade tip are integrally formed, which is convenient for assembly and production.

[0039] It should be noted that the puncture rod 400 is provided with a second buckle 411, and the protective cover 420 is provided with a second slot 421 that matches the second buckle 411. By providing the second buckle 411 and the second slot 421, the protective cover 420 can be stably connected to the puncture rod 400, and the assembly is simple and convenient, which can effectively reduce the cumbersome installation steps.

[0040] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A trocar, characterized in that: include: A cover body, wherein the bottom of the cover body is recessed upward to form an installation cavity, and a first clamping position is provided inside the installation cavity; A bottom plate, the bottom plate is mounted on the bottom of the cover body, the bottom plate is provided with a mounting hole and a fixing hole, the midpoint of the mounting hole coincides with the midpoint of the bottom plate, and a limiting block is provided on the outer side of the mounting hole; A puncture rod, the puncture rod is inserted into the mounting hole, and one end of the puncture rod is fixed to the bottom plate; A puncture knife, one end of which is inserted into the puncture rod, and the other end of which is installed at the bottom of the installation cavity; The elastic switch is provided with a first buckle, a first elastic block and a second buckle matching the first buckle, the first buckle and the second buckle abut against each other, the first buckle is passed through the fixing hole, one end of the first elastic block is connected to the first buckle, and the other end of the first elastic block abuts against the limit block; A sealing cap, wherein the sealing cap is provided with a first clamping groove matching the first clamping buckle.

2. The trocar according to claim 1, characterized in that: It also includes a return spring, which is located between the mounting hole and the limiting block, one end of the return spring is connected to the puncture rod, and the other end of the return spring is connected to the bottom of the mounting cavity.

3. The trocar according to claim 2, characterized in that: The bottom of the installation cavity is also provided with an installation groove, the other end of the puncture knife is installed in the installation groove, the reset spring is sleeved on the outside of the installation groove, and the reset spring is located between the installation groove and the limit block.

4. The trocar according to claim 1, characterized in that: The puncture rod is provided with a protective cover, one end of the puncture knife is provided with a puncture portion, the protective cover is sleeved on the puncture portion, and the end of the protective cover matches the puncture portion.

5. The trocar according to claim 4, characterized in that: The puncture part is a double-edged blade, and the protective cover is provided with a puncture end with a double-edged structure.

6. The trocar according to claim 5, characterized in that: The double-edged blade comprises a blade body and a blade head, and the blade body is smoothly transitionally connected to the side wall of the blade head.

7. The trocar according to claim 4, characterized in that: The puncture rod is provided with a second buckle, and the protection cover is provided with a second buckle slot matching the second buckle.

8. The trocar according to claim 1, characterized in that: A convex ring is arranged at one end of the puncture rod away from the cover body, and the convex ring is inclined inwardly along the length direction of the puncture rod.

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