Puncture trocar for laparoscopic surgery

Abstract

The invention relates to a laparoscopic surgery puncture trocar. The laparoscopic surgery puncture trocar comprises a trocar body, an air bag and a clamping piece. The air bag sleeves one end of the tube body and is used for expanding in the diameter direction of the tube body after being inflated; the clamping piece is movably mounted on the pipe body; a clamping face is arranged on the side, close to the air bag, of the clamping piece, and the clamping face and the air bag are matched with each other and used for being clamped on the two opposite sides of an operation puncture opening, so that the tube body is fixed to the operation puncture opening. The expansion degree of the air bag is adjusted, the clamping piece on the outer side of the human body is matched to help the puncture trocar to be fixed, the distance between the clamping piece and the air bag can be adjusted at will, and the puncture trocar can still be applied to people with different weights or patients with different abdominal wall thicknesses; and the fixing firmness of the puncture trocar is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a laparoscopic surgery puncture trocar. Background Art

[0002] The puncture trocar can be used in various surgical operations. It is used by specialists to puncture the abdominal cavity, deliver gas to the abdominal cavity, and establish a channel for endoscopes and surgical instruments to enter and exit the abdominal cavity from the outside during laparoscopic surgery. In the prior art, in order to fix the trocar on the surgical puncture port, some fixing structures have appeared. For example, two air bags are arranged on the side wall of the trocar. One of the air bags extends into the patient's abdominal cavity in an uninflated state, and the other air bag is located outside the patient's body. Then, the air bag is inflated, so that the air bag swells and contacts the skin or peritoneum, thereby playing a role in fixing the trocar. However, due to the different fatness and thinness of each patient, the thickness of their abdominal wall also varies greatly, making it difficult for the above-mentioned existing trocars to be suitable for various patients and difficult to fix the trocars securely. Summary of the invention

[0003] Based on this, it is necessary to provide a laparoscopic surgery puncture trocar to address the problem that the existing puncture trocar is not firmly fixed.

[0004] A laparoscopic surgical puncture trocar, comprising:

[0005] tube body;

[0006] The airbag is sleeved on one end of the tube body and is used to expand along the diameter direction of the tube body after being inflated;

[0007] The clamping piece is movably mounted on the tube body; the side of the clamping piece close to the airbag is set as a clamping surface, and the clamping surface and the airbag cooperate with each other to clamp on opposite sides of the surgical puncture port, so that the tube body is fixed on the surgical puncture port.

[0008] As a preferred example, the clamping member includes an elastic member, and the elastic member is used to fix the clamping member and the tube body relative to each other through elastic force.

[0009] As a preferred example, the clamping member includes:

[0010] Two first sleeve rings, both of which are sleeved on the pipe; the two first sleeve rings are slidably connected to each other;

[0011] The spring is arranged between the two first rings and is used for pushing the two first rings away from each other to clamp the pipe body.

[0012] As a preferred example, one of the first rings is provided with a slide groove in the middle of the side surface in the thickness direction, and the slide groove is connected with the interior of the first ring; and the other first ring is slidably connected with the slide groove.

[0013] As a preferred example, the clamping member includes:

[0014] A clamping plate, one side of which is provided with a notch matching the diameter of the tube body; the side of the clamping plate close to the airbag is a clamping surface;

[0015] The fixing clamp comprises two mutually hinged pieces and a torsion spring; the hinge axes of the two pieces are connected to the side of the clamping plate away from the clamping surface; the torsion spring is used to push the two pieces to rotate to clamp the pipe body.

[0016] As a preferred example, the clamping member includes:

[0017] An insert is sleeved on the tube body; the insert is provided with an inclined surface;

[0018] Two second rings are both sleeved on the insert; the two second rings are threadedly connected; the inner wall of one of the second rings abuts against the inclined surface on the insert; when the two second rings move away from or close to each other through the threads, the second rings squeeze the inclined surface so that the insert deforms toward the axis of the tube body to clamp the tube body.

[0019] As a preferred example, the clamping member includes:

[0020] Two half ring blocks are sleeved on the pipe fitting; one end of the two half ring blocks are hinged to each other;

[0021] The buckle is arranged at the other end of the two half ring blocks and is used for locking the two half ring blocks when they are closed to clamp the pipe.

[0022] As a preferred example, the buckle includes a strip portion and a hook portion connected to one end of the strip portion; the strip portion is hinged to the end of one of the half ring blocks; and the end of the other half ring block is provided with a hook groove matching the hook portion.

[0023] As a preferred example, the laparoscopic surgery puncture trocar also includes:

[0024] An airbag membrane is sleeved on the tube body; an inflation gap is provided between the airbag membrane and the tube body;

[0025] A restraining sleeve is sleeved on the airbag membrane; a section of the airbag membrane is located outside the restraining sleeve; the airbag membrane outside the restraining sleeve is expanded by gas to form the airbag.

[0026] The air nozzle is connected to the tube body and is used to inflate and release air into the inflation gap.

[0027] As a preferred example, the material of the tube body is PC; the material of the airbag is PE or TPU; and the material of the clamp is PC or PP.

[0028] As a preferred example, the end surface of the end of the tube body is arranged perpendicular to the axis of the tube body, and the end of the tube body is rounded.

[0029] The beneficial effects of the present invention are as follows: the present invention adjusts the expansion degree of the airbag and cooperates with the clamping piece on the outside of the human body to help fix the puncture trocar, and the clamping piece can arbitrarily adjust the distance between it and the airbag. Even when facing people of different fat and thin bodies or patients with different abdominal wall thicknesses, it can still be used, and the reliability of the puncture trocar when fixed is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the puncture trocar in the first embodiment;

[0031] Figure 2 is a cross-sectional schematic diagram of the clamping member in the first embodiment;

[0032] Figure 3 This is a schematic diagram of the structure of the puncture trocar in the second embodiment;

[0033] Figure 4 It is a schematic diagram of the structure of the clamping member in the second embodiment;

[0034] Figure 5 This is a schematic diagram of the structure of the puncture trocar in Example 3;

[0035] Figure 6 is a cross-sectional schematic diagram of the clamping member in the third embodiment;

[0036] Figure 7 This is a schematic diagram of the structure of the puncture trocar in the fourth embodiment;

[0037] Figure 8 It is a structural schematic diagram of the clamping member in the fourth embodiment;

[0038] Fig. 9 Schematic diagram of the cross-sectional structure of the tube body and the airbag in another embodiment.

[0039] In the figure: tube body 1, airbag 2, clamping member 3, first sleeve ring 4, spring 5, clamping plate 6, fixing clip 7, torsion spring 8, insert 9, second sleeve ring 10, half ring block 11, buckle 12, restraining sleeve 13, air nozzle 14. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0042] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0044] The present invention provides a laparoscopic surgical puncture trocar, which includes a tube body 1, an airbag 2 and a clamp 3. The structure of the tube body 1 can directly adopt the existing trocar. The airbag 2 is only provided at the end of the tube body 1 structure, that is, the end that can be extended into the patient's abdominal cavity. The key point is the movably provided clamp 3. The clamp 3 is fixed on the tube body 1, and the position of the clamp 3 on the tube body 1 can be conveniently adjusted when necessary. The side of the clamp 3 close to the airbag 2 is provided as a clamping surface. By adjusting the position of the clamp 3 on the tube body 1, the distance between the clamp surface and the airbag 2 can be controlled. The distance is the thickness of the patient's abdominal cavity. Finally, the clamp surface and the airbag 2 cooperate with each other to clamp on the opposite sides of the surgical puncture port, so that the tube body 1 can be firmly fixed on the surgical puncture port. To achieve the above effect, the clamp 3 may include an elastic member, and the elasticity of the elastic member is used to fix the clamp 3 to the tube body 1. When the clamping member 3 needs to be moved, the elastic member is operated to loosen the clamping member 3 and the tube body 1. The specific structure of the clamping member 3 includes the following embodiments:

[0045] Embodiment 1

[0046] Please refer to Figure 1 and Figure 2In this embodiment, the clamping member 3 includes two first sleeves 4 and a spring 5. Both first sleeves are sleeved on the pipe, and both first sleeves 4 are slidably connected. Specifically, a slide groove is provided on the side of one of the first sleeves 4, that is, in the middle position in the thickness direction. The slide groove directly penetrates the inner wall of the first sleeve 4, so that the slide groove is connected to the internal cavity of the first sleeve 4. The other first sleeve 4 is arranged in the slide groove and slidably connected with it. The advantage of such a setting is that no additional sliding connection structure is required, and when a force is applied to the two first sleeves 4, the direction of the force is located in the same plane, and the two first sleeves 4 are relatively stable when sliding relative to each other. Of course, the first sleeve 4 referred to in this embodiment is not necessarily set as a complete ring, and it can also be provided with an opening on one side of the ring. The size of the opening is smaller than the diameter of the pipe body 1, so that the first sleeve 4 will not fall off the pipe body 1. The number of springs 5 ​​can be set to one or more. The contraction direction of the multiple springs 5 ​​is set along the sliding direction of the first sleeve 4, and the two ends of the spring 5 are respectively abutted against the two first sleeves 4. When the clamp 3 is sleeved on the tube 1, the spring 5 pushes the two first rings 4 away from each other. Since the two first rings 4 are sleeved on the tube 1, when the two first rings 4 move away from each other, the forces applied by their inner walls to the tube 1 are in opposite directions, thereby fixing the clamp 3 on the tube 1. When the clamp 3 needs to be moved, the two first rings 4 are pressed with fingers, so that the two first rings 4 compress the spring 5, and the inner walls of the first rings 4 and the tube 1 are loosened, so that the clamp 3 can slide up and down on the tube 1 to adjust the position. The clamp 3 in this embodiment is small in size and can be operated with one hand, which is convenient to use.

[0047] Embodiment 2

[0048] Please refer to Figure 3 and Figure 4In this embodiment, the clamping member 3 includes a clamping plate 6 and a fixing clamp 7. The clamping plate 6 can be set to be circular, and a notch matching the diameter of the tube body 1 is opened at the edge. The tube body 1 extends into the notch so that the clamping plate 6 is sleeved on the tube body 1. At this time, the side of the clamping plate 6 close to the airbag 2 is the clamping surface. The fixing clamp 7 is arranged on the side of the clamping plate 6 away from the clamping surface. Specifically, the fixing clamp 7 includes two mutually hinged pieces and a torsion spring 8. The hinge axis of the two pieces is connected to the clamping plate 6. With the hinge axis as the boundary, the two pieces are located on the same side of the hinge axis and are set to an arc matching the tube body 1, and the other side is set to a handle style. The torsion spring 8 is arranged on the hinge axis, which is used to push the two pieces to rotate relative to each other, and the direction of the force of the torsion spring 8 tends to push the pieces to clamp the tube body 1. When the clamping member 3 needs to be moved, the handle is pressed with a finger, so that the two ends of the arc-shaped pieces move away from each other, thereby releasing the clamped pipe body 1, so that the clamping member 3 can slide up and down on the pipe body 1. When the handle is released, the two pieces clamp the pipe body 1 under the action of the torsion spring 8, so that the clamping member 3 is fixed on the pipe body 1. The clamping member 3 in this embodiment is small in size, can be operated with one hand, is easy to use, and compared with the first embodiment, the clamping member 3 does not need to be set on the pipe body 1 in advance.

[0049] Embodiment 3

[0050] Please refer to Figure 5 and Figure 6 In this embodiment, the clamping member 3 includes an insert 9 and two second collars 10. The insert 9 is annular and sleeved on the tube body 1, and a slope is provided on the top of the outer wall of the insert 9. The two second collars 10 are sleeved on the insert 9, and the two second collars 10 are connected by threads, that is, the two second collars 10 can move away from or approach each other in the axial direction by rotating.

[0051] like Figure 6 As shown, the insert 9 itself has a certain elasticity, and a notch is provided on the annular insert 9, so that the insert 9 can be deformed more easily. When the clamp 3 is assembled on the tube body 1, the inner wall of the upper second ring 10 abuts against the inclined surface of the upper end of the insert 9. When the upper second ring 10 is rotated in one direction, the two second rings 10 approach each other, so that the inner wall of the upper second ring 10 squeezes the inclined surface. A component force is generated on the inclined surface of the insert 9 in the direction of the axis of the tube body 1, pushing the upper end of the insert 9 (i.e., the end provided with the inclined surface) to deform in the direction of the tube body 1, thereby clamping and fixing the tube body 1.

[0052] When the clamping member 3 needs to be moved, the upper second ring 10 is rotated in another direction so that the two second rings 10 are separated from each other, and the upper second ring 10 is no longer on the inclined surface of the extruded insert 9. Then the insert 9 recovers to its original state under its own elastic properties and is separated from the tube body 1. At this time, the clamping member 3 can be freely moved on the tube body 1. The clamping member 3 in this embodiment can be fixed very firmly, and its locking effect is good.

[0053] Embodiment 4

[0054] Please refer to Figure 7 and Figure 8 In this embodiment, the clamp 3 includes two half-ring blocks 11 and a buckle 12. The half-ring block 11 is a block with an arc-shaped groove. The two arc-shaped grooves match the tube body 1 and can clamp the tube body 1 when closed. To this end, one end of the two half-ring blocks 11 is hinged to each other (the two half-ring blocks 11 can be formed as one piece, partially connected at the end, and hinged by their own flexibility). The other end is locked and opened by the buckle 12. Specifically, the buckle 12 includes a strip and a hook connected to one end of the strip. The strip is hinged to the end of one of the half-ring blocks 11 (similarly, the strip and the half-ring block 11 can be formed as one piece, partially connected at the end, and hinged by their own flexibility), and the end of the other half-ring block 11 is provided with a hook groove matching the hook. When fixing the clamp 7 holding member 3, the two half ring blocks 11 close together to clamp the tube body 1, and then pry the strip portion so that the hook portion extends into the hook groove, so that the two half ring blocks 11 are locked, and the clamp 3 is fixed to the tube body 1. When the clamp 3 needs to be moved, the strip portion is pressed, and the hook portion tilts up and disengages from the hook groove. At this time, the two half ring blocks 11 are naturally loosened, so that the clamp 3 can slide up and down on the tube body 1. The clamp 3 in this embodiment can be operated with one hand, is easy to use, has a good locking effect, and does not need to be set on the tube body 1 in advance.

[0055] In other embodiments, the laparoscopic puncture trocar further comprises an air bag 2 mold, a restraining sleeve 13 and an air nozzle 14. Fig. 9 As shown, the airbag 2 membrane is inserted into the restraining sleeve 13 and fixed by gluing or hot melting, and one section of the airbag 2 membrane is located outside the restraining sleeve 13. The assembled and fixed airbag 2 membrane and the restraining sleeve 13 are then sleeved on the tube body 1, and an inflation gap is set between the airbag 2 membrane and the tube body 1. The two ends of the airbag 2 membrane are then bonded or hot melted to the tube body 1 to seal the inside of the airbag 2 membrane. The air nozzle 14 is set on the tube body 1 and is connected to the inflation gap. When inflated through the air nozzle 14, the gas causes the airbag 2 membrane outside the restraining sleeve 13 to expand to form the above-mentioned airbag 2. When the air nozzle 14 is deflated, the airbag 2 is reset due to the elasticity of the airbag 2 membrane and returns to the membrane state. Please refer again Fig. 9The end of the tube body 1 is set to be a straight surface, that is, the end surface direction of the end is set perpendicular to the axis of the tube body 1 (the end of the tube body 1 is Fig. 9 The right end of the trocar is rounded and blunted at the edge of the end. Compared with the traditional trocar with a sharp beveled end, this design can avoid the risk of accidental damage to the internal organs and tissues of the human body cavity by the original trocar beveled sharp end after the needle core in the trocar is withdrawn; secondly, it can avoid the original trocar beveled sharp end having to be completely retained in the human abdominal cavity inside the puncture channel, preventing the original trocar beveled sharp end from reducing the scope of laparoscopic operation to a certain extent.

[0056] Among the components of the above-mentioned trocar, the material of the tube body 1 can be PC. The material of the airbag 2 can be PE or TPU. The material of the clamping member 3 can be PC or PP. In particular, in the fourth embodiment, the clamping member 3 made of PP material can firmly clamp the tube body 1 by utilizing the elasticity and flexibility of the material itself.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A laparoscopic surgical puncture trocar, characterized in that: include: tube body(1); An air bag (2) is sleeved on one end of the tube body (1) and is used to expand along the diameter direction of the tube body (1) after being inflated; A clamping member (3) is movably mounted on the tube body (1); a side of the clamping member (3) close to the airbag (2) is provided as a clamping surface, and the clamping surface and the airbag (2) cooperate with each other to clamp on opposite sides of the surgical puncture port, so that the tube body (1) is fixed on the surgical puncture port.

2. The laparoscopic puncture trocar according to claim 1, characterized in that: The clamping member (3) comprises an elastic member, and the elastic member is used to fix the clamping member (3) and the tube body (1) relative to each other through elastic force.

3. The laparoscopic puncture trocar according to claim 2, characterized in that: The clamping member (3) comprises: Two first sleeve rings (4), both of which are sleeved on the pipe; the two first sleeve rings (4) are slidably connected to each other; A spring (5) is arranged between the two first collars (4) and is used to push the two first collars (4) away from each other so as to clamp the pipe body (1).

4. The laparoscopic surgical puncture trocar according to claim 3, characterized in that: One of the first sleeve rings (4) is provided with a slide groove in the middle of the side surface in the thickness direction, and the slide groove is connected to the inside of the first sleeve ring (4); the other first sleeve ring (4) is slidably connected to the slide groove.

5. The laparoscopic surgical puncture trocar according to claim 2, characterized in that: The clamping member (3) comprises: A clamping plate (6) is provided with a notch on one side thereof that matches the diameter of the tube body (1); the side of the clamping plate (6) close to the airbag (2) is a clamping surface; The fixing clamp (7) comprises two mutually hinged pieces and a torsion spring (8); the hinge axes of the two pieces are connected to the side of the clamping plate (6) away from the clamping surface; the torsion spring (8) is used to push the two pieces to rotate so as to clamp the pipe body (1).

6. The laparoscopic surgical puncture trocar according to claim 1, characterized in that: The clamping member (3) comprises: An insert (9) is sleeved on the tube body (1); the insert (9) is provided with an inclined surface; Two second collars (10) are both sleeved on the insert (9); the two second collars (10) are threadedly connected; the inner wall of one of the second collars (10) abuts against the inclined surface on the insert (9); when the two second collars (10) move away from or closer to each other through the threads, the second collars (10) squeeze the inclined surface so that the insert (9) is deformed in the axial direction of the tube body (1) to clamp the tube body (1).

7. The laparoscopic surgical puncture trocar according to claim 1, characterized in that: The clamping member (3) comprises: Two half ring blocks (11) are sleeved on the pipe fitting; one end of the two half ring blocks (11) are hinged to each other; The buckle (12) is arranged at the other end of the two half ring blocks (11) and is used for locking the pipe when the two half ring blocks (11) are closed to clamp the pipe.

8. The laparoscopic puncture trocar according to claim 7, characterized in that: The buckle (12) comprises a strip-shaped portion and a hook-shaped portion connected to one end of the strip-shaped portion; the strip-shaped portion is hinged to the end of one of the half ring blocks (11); and the end of the other half ring block (11) is provided with a hook groove matching the hook-shaped portion.

9. The laparoscopic surgical puncture trocar according to claim 1, characterized in that: The laparoscopic surgery puncture trocar also includes: An airbag (2) membrane is sleeved on the tube body (1); an air-filled gap is provided between the airbag (2) membrane and the tube body (1); A restraining sleeve (13) is sleeved on the airbag (2) membrane; a section of the airbag (2) membrane is located outside the restraining sleeve (13); the airbag (2) membrane located outside the restraining sleeve (13) is expanded by gas to form the airbag (2); The air nozzle (14) is connected to the tube body (1) and is used for filling and releasing air into the air filling gap.

10. The laparoscopic surgical puncture trocar according to claim 1, characterized in that: The end surface of the end of the tube body (1) is arranged perpendicular to the axis of the tube body (1), and the end of the tube body (1) is rounded and blunted.

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