Puncture outfit fixing device

Abstract

The utility model belongs to the technical field of medical auxiliary instruments, and provides a puncture outfit fixing device which comprises an annular seat body provided with a central through hole and a clamping and abutting piece movably embedded in the annular seat body, and the clamping and abutting piece can move in a reciprocating mode in the radial direction perpendicular to the axis of the annular seat body. The clamping and abutting piece is provided with a clamping and abutting through hole matched with the center through hole, and a bonding layer fixedly connected with the ring base body is arranged at the bottom of the ring base body so that the ring base body can be bonded and fixed to the skin position of the body surface of the puncture part. According to the puncture outfit fixing device, the position of the puncture outfit can be adjusted and fixed, the puncture outfit is prevented from sliding and deviating along with entering and exiting of surgical instruments, damage to human tissue at the puncture position is avoided, and the puncture outfit fixing device is suitable for puncture outfits of different specifications, convenient to use and high in practicability.

Description

Technical Field

[0001] This utility model belongs to the field of medical auxiliary device technology, and specifically relates to a puncture device fixation device. Background Technology

[0002] A laparoscopic trocar is a disposable medical device used in minimally invasive surgery for gas delivery and creating access channels for endoscopes and surgical instruments to enter and exit body cavities. It is suitable for various laparoscopic surgeries, including minimally invasive surgical procedures, gynecological minimally invasive surgeries, thoracic surgery, and urological surgeries. Currently, laparoscopic trocars typically utilize the threads on the outer sheath (trocar cannula) to increase friction with the skin at the puncture site to secure the trocar. However, during surgery, with repeated insertion and removal of surgical instruments, friction inevitably occurs between the instruments and the inner wall of the trocar, often leading to the trocar sliding and shifting along with the surgical instruments. On the one hand, the slippage of the trocar can cause the tip of the trocar to get too close to or too far from the surgical area, changing the preset puncture depth. When it gets too close to the surgical area, it will affect the entry and opening of the laparoscope and surgical instruments. When it gets too far away from the surgical area, it will weaken the guiding effect of the trocar and may even detach from the skin, making it impossible for the surgical instruments to enter to the appropriate depth and affecting the normal progress of the operation. On the other hand, the existing trocars use a threaded structure to fix the friction between the trocar and the skin at the puncture site, resulting in greater surgical trauma and hindering the postoperative healing and recovery of the puncture site.

[0003] Therefore, there is a need to design a puncture device fixation device that can effectively solve at least some of the above-mentioned problems and defects. Summary of the Invention

[0004] To solve the above technical problems, this utility model proposes a puncture device fixing device, which can adjust and fix the position of the puncture device, avoid the sliding and displacement of the puncture device as the surgical instrument moves in and out, thereby avoiding damage to human tissue at the puncture site. It is also suitable for puncture devices of different specifications and is convenient and practical to use.

[0005] The technical solution of this utility model is:

[0006] This utility model proposes a puncture device fixing device, including a ring seat body with a central through hole and a locking piece movably embedded in the ring seat body, wherein the locking piece can reciprocate in a radial direction perpendicular to the axis of the ring seat body.

[0007] The locking tab is provided with a locking through hole that matches the central through hole, and the bottom of the ring seat is provided with an adhesive layer that is fixedly connected thereto, so as to stick and fix it to the skin surface of the puncture site.

[0008] Preferably, the ring seat is provided with a locking groove that is adapted to the locking piece, and the locking piece is partially movably embedded in the locking groove.

[0009] Preferably, the ring seat body is further provided with a compression spring embedded therein, one end of the compression spring extending into the locking groove and connected to the locking piece.

[0010] Preferably, the ring seat body is further provided with a receiving groove communicating with the locking groove, and a pressure adjusting knob that is partially movable and embedded in the receiving groove;

[0011] The pressure spring is movably disposed within the receiving groove and is connected to the pressure adjusting knob.

[0012] Preferably, the bottom of the ring seat is further provided with a pressure-reducing layer located between it and the adhesive layer, one side of the pressure-reducing layer is fixedly connected to the ring seat, and the other side is fixedly connected to the adhesive layer.

[0013] Preferably, the area of ​​the adhesive layer is larger than the area of ​​the ring seat, and the adhesive layer is provided with a plurality of outer ring areas distributed radially at intervals.

[0014] Preferably, the inner wall of the central through hole is provided with a plurality of protrusions spaced apart along the circumferential direction, and / or the inner wall of the locking through hole is provided with a plurality of protrusions spaced apart along the circumferential direction.

[0015] This utility model has the following advantages and effects compared with the prior art:

[0016] (1) A ring seat body with a central through hole and a locking plate with a locking through hole are adopted. By moving the locking plate radially relative to the ring seat body, the intersection and overlap area of ​​the central through hole and the locking through hole are changed, thereby adapting to puncture devices of different specifications (different outer diameters of puncture cannulas). It has a wide range of applications and strong practicality.

[0017] (2) An adhesive layer is set at the bottom of the ring seat and fixedly connected to it. The entire ring seat is glued and fixed to the skin surface of the puncture site through the adhesive layer. This can achieve stable fixation of the puncture device and avoid the phenomenon of sliding, displacement and slippage of the puncture device. At the same time, it causes less trauma to the patient's skin and is conducive to the patient's postoperative healing and recovery.

[0018] (3) A pressure spring connected to the locking piece is used. The pressure spring can push the locking piece to press against the outer wall of the puncture cannula of the puncture device, and cooperate with the inner wall of the central through hole of the ring seat to achieve pressure fixation of the puncture device;

[0019] (4) By using a pressure adjustment knob connected to the other end of the pressure spring, the effective stroke of the pressure spring can be changed, thereby changing the pressure force of the clip on the puncture device as needed, and improving the stability and reliability of the fixation effect of the puncture device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the puncture device fixation device in Embodiment 1 of this utility model;

[0021] Figure 2 This is an exploded structural diagram of the puncture device fixation device in Embodiment 1 of this utility model;

[0022] Figure 3 This is a schematic diagram of the ring seat in the puncture device fixing device of Embodiment 1 of this utility model;

[0023] Figure 4 This is a schematic diagram of the use of the puncture device fixation device in Embodiment 1 of this utility model;

[0024] Figure 5 This is a schematic diagram of the ring seat in the puncture device fixing device of Embodiment 2 of this utility model.

[0025] Reference numerals: 1. Ring seat body; 11. Central through hole; 12. Snap groove; 13. Receiving groove; 2. Snap abutment piece; 21. Snap abutment through hole; 3. Adhesive layer; 31. Outer ring area; 4. Compression spring; 5. Pressure adjusting knob; 6. Pressure reducing layer; 7. Protrusion; 8. Puncture device. Detailed Implementation

[0026] To enable those skilled in the art to better understand this utility model, it will now be further described in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this utility model.

[0027] Example 1:

[0028] like Figures 1-4 As shown, this utility model provides a puncture device fixing device, which includes a ring seat 1 with a central through hole 11 and a locking piece 2 movably embedded inside the ring seat 1. The locking piece 2 can reciprocate in a radial direction perpendicular to the axis of the ring seat 1. The puncture cannula of the puncture device 8 can pass through the central through hole 11 for puncture. For details, please refer to [reference needed]. Figure 4 As the content shows, it should be noted that since the puncture device is a mature existing technology, its structure and principle will not be described in detail here.

[0029] Furthermore, the diameter of the central through hole 11 is larger than the outer diameter of the puncture cannula of the existing puncture device 8, so as to be suitable for puncture devices of different sizes. The inner wall of the central through hole 11 is provided with several protrusions 7 evenly spaced along the circumferential direction to prevent slippage and ensure that it is tightly and stably attached to the puncture cannula of the puncture device 8, so as to avoid axial movement or displacement between the ring seat 1 and the puncture cannula of the puncture device 8.

[0030] Combining Figure 1 and Figure 2 As shown, the locking piece 2 is movably embedded inside the ring seat 1, and it can reciprocate in a radial direction perpendicular to the axis of the ring seat 1. The locking piece 2 is provided with a locking through hole 21 that matches the central through hole 11. The axis of the locking through hole 21 is parallel to that of the central through hole 11, and during the radial movement of the locking piece 2, the axis of the locking through hole 21 can coincide with the axis of the central through hole 11. At this time, the locking through hole 21 and the central through hole 11 completely overlap, so that the puncture tube sleeve of the puncture device 8 can pass through the central through hole 11 and the locking through hole 21. The inner wall of the locking through hole 21 is provided with several protrusions 7 evenly spaced along the circumferential direction to improve the stability of the locking.

[0031] Specifically, the ring seat 1 is provided with a locking groove 12 that is adapted to the locking piece 2. The locking piece 2 is partially embedded in the locking groove 12, and the projection of the central through hole 11 along the axial direction of the ring seat 1 is located within the projection of the locking groove 12.

[0032] like Figure 2 As shown, the ring seat 1 is also provided with a compression spring 4 embedded inside it. One end of the compression spring 4 extends into the locking groove 12 and is connected to the locking piece 2 to push the locking piece 2 to move outward in the radial direction, thereby reducing the intersection area between the locking through hole 21 and the central through hole 11, so as to compress and lock the small-sized trocar (the diameter of the trocar cannula is small). At the same time, when the locking piece 2 is manually pressed to push it to move inward in the radial direction, the compression spring 4 is compressed and the intersection area between the locking through hole 21 and the central through hole 11 increases until the locking through hole 21 and the central through hole 11 completely overlap, so that the trocar 8 can be passed through the central through hole 11 and the locking through hole 21. The fixed position of the ring seat 1 on the trocar 8 can be adjusted according to the puncture depth of the operation. At the same time, it is also convenient to adapt to trocars of different sizes (different outer diameters of trocar cannulas).

[0033] Combination Figure 2 and Figure 3As shown, the ring seat 1 is also provided with a receiving groove 13 that communicates with the locking groove 12, and a pressure adjusting knob 5 that is partially embedded in the receiving groove 13. The pressure spring 4 is movably disposed in the receiving groove 13 and is connected to one end of the pressure adjusting knob 5 that extends into the receiving groove 13. The pressure adjusting knob 5 is partially screwed into the receiving groove 13. By adjusting the length of the part of the pressure adjusting knob 5 that extends into the receiving groove 13, the effective stroke of the pressure spring 4 is changed, thereby changing the pressure force of the locking piece 2. For example, for some puncture cannulas with a small outer diameter, the pressure force of the pressure spring 4 can be increased by increasing the screw-in length of the pressure adjusting knob 5.

[0034] refer to Figure 1 As shown, an adhesive layer 3 is provided at the bottom of the ring base 1 near the body surface for fixed connection, so as to fix the ring base 1 and the puncture device 8 at the puncture site on the body surface. The adhesive layer 3 is made of breathable material to ensure the breathability of the skin at the adhesion site. The projected area of ​​the adhesive layer 3 along the axis of the ring base 1 is larger than the projected area of ​​the ring base 1 to improve the adhesion and fixation effect.

[0035] Furthermore, a pressure-reducing layer 6 is provided at the bottom of the ring seat 1 near the body surface, located between it and the adhesive layer 3. One side of the pressure-reducing layer 6 is fixedly connected to the ring seat 1, and the other side is fixedly connected to the adhesive layer 3. Specifically, the pressure-reducing layer 6 is made of a pressure-reducing and buffering material, such as polyurethane foam, which can absorb part of the pressure transmitted to the skin surface by the puncture device 8 and the ring seat 1, thereby reducing the local pressure on the skin at the puncture site.

[0036] Example 2:

[0037] In Embodiment 2 of this utility model, using Figure 5 The following description will be provided. Furthermore, descriptions of parts that are no different from those in Embodiment 1 will be omitted, and the same reference numerals will be used instead.

[0038] like Figure 5 As shown, the puncture device fixing device of this utility model has an adhesive layer 3 with a plurality of outer ring areas 31 distributed radially at intervals. Specifically, this embodiment takes three adjacent outer ring areas 31 as an example for explanation. The adhesive area of ​​the adhesive layer 3 can be changed by cutting off the outer ring area 31 located on the outside, thereby adapting to meet different adhesive needs and improving the stability of adhesive fixing.

[0039] In summary, the puncture device fixing device provided by this utility model can adjust and fix the position of the puncture device, avoid the sliding and displacement of the puncture device as the surgical instrument moves in and out, thereby avoiding damage to human tissue at the puncture site. It is also suitable for puncture devices of different specifications and is convenient and practical to use.

[0040] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. All equivalent changes and modifications made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A puncture device securing apparatus, characterized by: It includes a ring seat (1) with a central through hole (11) and a locking piece (2) movably embedded inside the ring seat (1). The locking piece (2) can reciprocate in a radial direction perpendicular to the axis of the ring seat (1). The locking piece (2) is provided with a locking through hole (21) that is adapted to the central through hole (11), and the bottom of the ring seat (1) is provided with an adhesive layer (3) that is fixedly connected thereto, so as to stick and fix it to the skin position of the puncture site.

2. The puncture fixer device according to claim 1, wherein: The ring seat (1) is provided with a locking groove (12) that is adapted to the locking piece (2), and the locking piece (2) is partially movably embedded in the locking groove (12).

3. The puncture fixer device according to claim 2, wherein: The ring seat (1) is also provided with a pressure spring (4) embedded inside it. One end of the pressure spring (4) extends into the locking groove (12) and is connected to the locking piece (2).

4. The puncture fixer device according to claim 3, wherein: The ring seat (1) is also provided with a receiving groove (13) that communicates with the snap-fit ​​groove (12), and a pressure regulating knob (5) that is partially embedded in the receiving groove (13). The pressure spring (4) is movably disposed in the receiving groove (13) and is connected to the pressure regulating knob (5).

5. The puncture fixer device according to claim 1, wherein: The bottom of the ring seat (1) is also provided with a pressure-reducing layer (6) located between it and the adhesive layer (3). One side of the pressure-reducing layer (6) is fixedly connected to the ring seat (1), and the other side is fixedly connected to the adhesive layer (3).

6. The puncture fixer device according to claim 1, wherein: The area of ​​the adhesive layer (3) is larger than the area of ​​the ring seat (1), and the adhesive layer (3) is provided with a plurality of outer ring areas (31) distributed radially at intervals.

7. The puncture fixer device according to claim 1, wherein: The inner wall of the central through hole (11) is provided with a number of protrusions (7) spaced apart along the circumferential direction, and / or the inner wall of the locking through hole (21) is provided with a number of protrusions (7) spaced apart along the circumferential direction.

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