Single-port laparoscopic trocar

Abstract

The utility model provides a single-hole laparoscopic surgical puncture device, including a fixed tube, a movable tube and a connecting seat, the center of the connecting seat is fixed with a fixed tube through bolts, the fixed tube is movably connected with a movable tube, one side of the fixed tube is provided with an adjustment cavity, the fixed tube is fixed with a bearing seat through bolts at the centers of both ends of the adjusting cavity, a screw is fixed with bolts between the central movable parts of the bearing seat, and an adjustment block is threadedly connected with the screw. The adjustment block on the screw can move back and forth under the activity limitation of the adjustment rod and the limit groove during the rotation process, and the movable tube can be moved in the fixed tube through the adjustment rod during the movement of the adjustment block, and the distance between the movable tube and the fixed tube can be adjusted, which meets the use requirements and is simple and convenient to operate. The T-shaped skin contact plate can achieve a buffering effect under the action of the spring and the damping telescopic rod, avoiding a stiff impact on the patient's body part, improving the patient's comfort performance, and having high practical value.

Description

Technical Field

[0001] The utility model relates to the technical field related to laparoscopy, and in particular to a single-hole laparoscopic surgical puncture device. Background Art

[0002] Laparoscopic surgery is a newly developed minimally invasive method and an inevitable trend in the development of surgical methods in the future. With the rapid development of industrial manufacturing technology, the integration of related disciplines has laid a solid foundation for the development of new technologies and methods. Coupled with the increasingly skilled operation of doctors, many open surgeries in the past have now been replaced by endoscopic surgeries, greatly increasing the opportunities for surgical selection. The traditional method of retroperitoneoscopic surgery is to make three small 1 cm incisions on the patient's waist, insert a tubular working channel called "trocar" into each, and all subsequent operations are performed through these three tubes; then use specially made extended surgical instruments to complete the same steps as open surgery under television monitoring to achieve the same surgical effect.

[0003] The advantages of two-port retroperitoneoscopic surgery are very obvious. First, the trauma is very small, only two small incisions are needed, and the scar is very small. This is more noteworthy for young people and women who love beauty. Second, the operation is a direct entry, which minimizes the damage to the surrounding tissues and reduces the chance of adhesion after surgery. Third, the patient's postoperative wound pain is significantly reduced. Fourth, the number of hospitalization days is relatively small. Some patients can be discharged from the hospital in just 2-3 days, and can fully recover and return to work in 7 days, thereby greatly reducing the cost burden on patients and accelerating the turnover rate of hospital beds. However, the existing laparoscopic surgical puncture device is time-consuming and laborious in the process of adjusting the length back and forth, and does not have a certain buffering effect when fixed to the patient's body. In this regard, this plan specially proposes a single-port laparoscopic surgical puncture device to solve the above problems. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model proposes a single-hole laparoscopic surgical puncture device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the technical solution of the utility model is implemented as follows: a single-hole laparoscopic surgical puncture device, comprising a fixed tube, a movable tube and a connecting seat, the center of the connecting seat is fixed with the fixed tube by bolts, the movable tube is movably connected inside the fixed tube, an adjustment cavity is opened inside one side of the fixed tube, a bearing seat is fixedly installed on the fixed tube at the centers of both ends of the adjusting cavity by bolts, a screw is fixedly installed between the central movable parts of the bearing seat by bolts, an adjustment block is threadedly connected on the screw, an adjustment rod is fixedly installed at the center of one side of the bottom of the adjustment block by bolts, and one end of the bottom of the adjustment rod extends through the inner side of the fixed tube, and the bottom end of the adjustment rod is fixedly installed on the outer side of the movable tube by bolts, a first bevel gear is fixedly installed on one end of the screw away from the connecting seat by bolts, a second bevel gear is meshed and connected to the top side of the first bevel gear, a rotating rod is fixedly installed at the center of one side of the top of the second bevel gear by bolts, and the top of the rotating rod passes through the bearing seat on the fixed tube and extends to the outer side of the fixed tube.

[0006] Preferably, an instrument insertion port is provided at one end of the movable tube.

[0007] Preferably, a spring is fixedly installed by bolts at the centers of both ends of the side inside the connecting seat away from the adjusting chamber, a connecting plate is fixedly installed by bolts between the top side of the spring, and a damping telescopic rod is fixedly installed between the connecting plate and the connecting seat by bolts.

[0008] Preferably, two ends of the other side of the connecting plate are fixed with T-shaped skin-adhesive plates by bolts, and the T-shaped skin-adhesive plates are movably inserted into movable holes opened on one side of the connecting seat.

[0009] Preferably, a rotating disk is fixedly mounted on the top end of the rotating rod by bolts.

[0010] Preferably, a connection hole is opened at the center of the connection plate, and the fixing pipe passes through the connection hole.

[0011] Preferably, a limiting groove matching the size of the adjusting rod is provided on the fixing tube at one side of the bottom of the adjusting cavity, and the adjusting rod movably passes through the limiting groove.

[0012] The beneficial effects of the utility model are embodied in:

[0013] The utility model drives the second bevel gear on the rotating rod to rotate stably on the bearing seat by operating the rotating disk, and the meshing of the second bevel gear drives the first bevel gear to rotate synchronously, and the screw on the first bevel gear rotates stably on the bearing seat, and the adjusting block on the screw can realize back and forth movement under the activity limitation of the adjusting rod and the limit groove during the rotation process, and utilizes the adjusting rod to move the movable tube in the fixed tube during the movement of the adjusting block to adjust the distance between the movable tube and the fixed tube, which meets the requirements of use and is simple and convenient to operate. The T-shaped skin-adhering plate is used to act on the patient's body, and the T-shaped skin-adhering plate realizes a buffering effect under the action of the spring and the damping telescopic rod, so as to avoid causing abrupt resistance to the patient's body parts, improve the patient's comfort performance, and have high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In the attached picture:

[0015] Figure 1 It is a schematic three-dimensional diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic front view of the internal connection structure of the regulating chamber of the utility model;

[0017] Figure 3 It is a schematic side view of the internal structure of the connecting base of the utility model.

[0018] Description of reference numerals:

[0019] 1. Fixed tube; 11. Adjusting chamber; 12. Bearing seat; 13. Screw rod; 14. Adjusting block; 15. Adjusting rod; 16. First bevel gear; 17. Second bevel gear; 18. Rotating rod; 19. Rotating disk; 2. Movable tube; 21. Instrument insertion port; 22. Limiting groove; 3. Connecting seat; 31. Spring; 32. Connecting plate; 33. Damping telescopic rod; 34. T-shaped skin-adhesive plate; 35. Movable hole; 36. Connecting hole. DETAILED DESCRIPTION

[0020] The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in 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.

[0021] It should be noted that if the utility model embodiments involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, "multiple" means more than two. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0023] Embodiment: According to the single-port laparoscopic surgical puncture device of the embodiment of the utility model, it includes a fixed tube 1, a movable tube 2 and a connecting seat 3. A bearing seat 12 is fixedly installed on the fixed tube 1 at the centers of the two ends of the inner side of the adjusting cavity 11, and a screw 13 is fixedly installed between the central movable parts of the bearing seat 12. The screw can realize stable rotational movement on the bearing seat 12. An adjustment block 14 is threadedly connected on the screw 13, so that the adjustment block can perform stable rotational movement synchronously. A first bevel gear 16 is fixedly installed on the end of the screw 13 away from the connecting seat 3, and a second bevel gear 17 is meshedly connected to the top side of the first bevel gear 16. A rotating rod 18 is fixedly installed at the center of the top side of the second bevel gear 17. The meshing connection between the first bevel gear and the second bevel gear allows the rotation of the rotating rod to drive the screw to rotate.

[0024] refer to Figure 1 and Figure 2 A tool insertion port 21 is provided at one end of the movable tube 2 for convenient penetration into the guide tube. A limiting groove 22 matching the size of the adjusting rod 15 is provided on the fixed tube 1 at one side of the bottom of the adjusting cavity 11. The adjusting rod 15 is movable through the limiting groove 22 to limit the activity of the adjusting block, so that the rotational motion of the adjusting block is converted into linear motion, and the distance between the movable tube and the fixed tube is adjusted for easy operation.

[0025] refer to Figure 1 and Figure 3A connecting plate 32 is fixedly installed between the top side of the spring 31, and a damping telescopic rod 33 is fixedly installed between the connecting plate 32 and the connecting seat 3. The spring and the damping telescopic rod enable the T-shaped skin-adhesive disc to be buffered and fixed on the patient's body to improve the comfort performance. A connecting hole 36 is opened at the center of the connecting plate 32, and the fixing tube 1 passes through the connecting hole 36, and the through connection has a simple and stable structure.

[0026] When in use, the rotating disk is operated to drive the second bevel gear on the rotating rod to rotate stably on the bearing seat, and the meshing of the second bevel gear drives the first bevel gear to rotate synchronously, and the screw on the first bevel gear rotates stably on the bearing seat, and the adjusting block on the screw realizes back and forth movement under the activity limitation of the adjusting rod and the limit groove during the rotation process. The movable tube is moved in the fixed tube by the adjusting rod during the movement of the adjusting block, and the distance between the movable tube and the fixed tube is adjusted, which meets the requirements of use and is simple and convenient to operate. The T-shaped skin-adhering plate is used to act on the patient's body. The T-shaped skin-adhering plate realizes a buffering effect under the action of the spring and the damping telescopic rod, avoids causing stiff resistance to the patient's body, improves the patient's comfort performance, and has high practical value.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A single-port laparoscopic surgical trocar, comprising a fixed tube (1), a movable tube (2) and a connecting seat (3), characterized in that: The fixing tube (1) is fixed through bolts at the center of the connecting seat (3), the movable tube (2) is movably connected inside the fixing tube (1), an adjustment cavity (11) is provided inside one side of the fixing tube (1), a bearing seat (12) is fixedly installed on the fixing tube (1) at the centers of both ends inside the adjustment cavity (11) by bolts, a screw rod (13) is fixedly installed between the movable centers of the bearing seat (12) by bolts, an adjustment block (14) is threadedly connected through the screw rod (13), an adjustment rod (15) is fixedly installed at the center of one side of the bottom of the adjustment block (14) by bolts, and the ... The bottom end of the adjusting rod (15) extends through and extends to the inner side of the fixed tube (1), and the bottom end of the adjusting rod (15) is fixedly mounted on the outer side of the movable tube (2) by means of bolts. The end of the screw rod (13) away from the connecting seat (3) is fixedly mounted with a first bevel gear (16) by means of bolts. The top side of the first bevel gear (16) is meshingly connected with a second bevel gear (17). The center of the top side of the second bevel gear (17) is fixedly mounted with a rotating rod (18) by means of bolts. The top end of the rotating rod (18) passes through the bearing seat (12) on the fixed tube (1) and extends to the outer side of the fixed tube (1).

2. The single-port laparoscopic surgical puncture device according to claim 1, characterized in that: One end of the movable tube (2) is provided with an instrument insertion opening (21).

3. The single-port laparoscopic surgical puncture device according to claim 1, characterized in that: A spring (31) is fixedly installed at the center of both ends of the side of the connection seat (3) away from the adjustment chamber (11) by bolts, a connection plate (32) is fixedly installed between the top side of the spring (31) by bolts, and a damping telescopic rod (33) is fixedly installed between the connection plate (32) and the connection seat (3) by bolts.

4. The single-port laparoscopic surgical puncture device according to claim 3, characterized in that: T-shaped skin-adhering plates (34) are fixedly mounted at both ends of the other side of the connecting plate (32) by means of bolts, and the T-shaped skin-adhering plates (34) are movably inserted into movable holes (35) provided on one side of the connecting seat (3).

5. The single-port laparoscopic surgical puncture device according to claim 1, characterized in that: A rotating disk (19) is fixedly mounted on the top end of the rotating rod (18) by means of bolts.

6. The single-port laparoscopic surgical puncture device according to claim 3, characterized in that: A connection hole (36) is provided at the center of the connection plate (32), and the fixing pipe (1) passes through the connection hole (36).

7. The single-port laparoscopic surgical puncture device according to claim 1, characterized in that: The fixing tube (1) is provided with a limiting groove (22) on one side of the bottom of the adjusting cavity (11), the limiting groove (22) being consistent with the size of the adjusting rod (15), and the adjusting rod (15) is movably inserted into the limiting groove (22).

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