CN108079423B - A propeller for surgical intubation - Google Patents

Abstract

The present invention relates to the technical field of medical surgical instruments, and specifically to a pusher for surgical intubation. It includes a balloon, an inlet tube and an outlet tube located on the same central axis. A mounting plate and a guide sleeve are fixedly connected to the inner wall of the balloon. The edge of the mounting plate is fixedly connected to the inner wall of the balloon. A through hole is provided in the center of the mounting plate, located at the central axis. The guide sleeve is located between the outlet tube and the mounting plate. An arc-shaped spring is provided in the sliding sleeve of the guide sleeve. One end of the spring is fixedly connected to the mounting plate, and the other end is fixedly connected to a friction plate. A non-return device is provided in the inner cavity of the inlet tube. The surgical intubation pusher can be used for the insertion of tubular instruments such as cardiopulmonary surgery intubation, abdominal surgery drainage tube, and minimally invasive surgery intubation. It has a simple structure, is easy to use, and has a small amplitude of pushing operation, which can meet the requirements of refined surgical operations.

Description

A propeller for surgical intubation

Technical Field

The invention relates to the technical field of medical surgical instruments, in particular to a propeller for surgical cannulae.

Background technique

In major vascular surgeries such as heart surgeries, it is often necessary to insert surgical catheters into the human body. In minimally invasive surgeries, it is also often necessary to insert various catheters or drainage tubes through smaller incisions. Most of these intubation operations rely on manual work. Due to the small insertion port and the relatively soft pipeline, the stability and accuracy of the handheld intubation are difficult to master. Chinese Patent 2014107409122 discloses a "clamp-type cardiovascular surgery intubation pusher", which uses a clamp-type fixed grip and a movable grip to drive the ratchet disc at the front end of the grip to rotate, and the rotating ratchet disc drives the intubation forward. This clamp-type cardiovascular surgery intubation pusher avoids the defects caused by manual intubation operations, and the stability and accuracy of the operation are greatly improved. However, due to its relatively complex structure, the failure rate is high; in addition, the clamp-type grip is large in size and has a large range of motion, and the disassembly and assembly operations of the pusher are complicated, which cannot meet the requirements of narrow surgical space and refined surgical operations.

Summary of the invention

The purpose of the present invention is to solve the above technical problems and provide a pusher for surgical intubation with simple structure, easy use and good intubation operation stability. It is required to be easy and quick to disassemble and assemble, compact in structure and small in thrust operation amplitude to meet the requirements of refined surgical operations.

In order to solve the above technical problems, the technical solution of the present invention is as follows:

The thruster for surgical intubation described in the present invention comprises a balloon, an introduction tube and an outlet tube symmetrically arranged at both ends of the balloon, the introduction tube and the outlet tube are located on the same central axis, a mounting plate and a guide sleeve are fixedly connected to the inner wall of the balloon, the mounting plate is a plate body perpendicular to the central axis, the edge of the mounting plate is fixedly connected to the inner wall of the balloon, a through hole is provided in the center of the mounting plate, at a position located on the central axis; the guide sleeve is located between the outlet tube and the installation plate, a sliding sleeve in the guide sleeve is provided with an arc-shaped spring piece, one end of the spring piece is fixedly connected to the installation plate, and the other end is fixedly connected to a friction plate; a non-return device is provided in the inner cavity of the introduction tube.

The anti-return device includes an end cover and multiple claws connected to the end cover. The end cover is a circular sheet structure with an outer diameter larger than the inner diameter of the introduction tube. The center of the end cover is provided with an introduction hole, and multiple claws are evenly distributed around the introduction hole. The outer end of the claw arranged parallel to the axis of the introduction tube is fixedly connected to the end cover, and the inner end extends through the introduction tube to the inner cavity of the balloon. A trumpet-shaped transition section is provided at the junction of the inner wall of the balloon and the introduction tube, and the inner end of the claw has a protrusion matching the trumpet-shaped transition section.

A plurality of spring pieces are symmetrically arranged in groups of two on both sides of the central axis.

After adopting the above technical scheme, the surgical cannula pusher uses a balloon to squeeze the spring to axially push the pipeline, and uses a non-return device to prevent the pipeline from rebounding. It can be used for the insertion of all tubular instruments such as cardiopulmonary surgery cannula, abdominal surgery drainage tube, minimally invasive surgery cannula, etc. It has a simple structure, is easy to use, has a compact structure, is easy and quick to disassemble and assemble, and has a small range of motion for the pushing operation, which can meet the requirements of refined surgical operations.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1 .

FIG3 is a cross-sectional view taken along line B-B in FIG1 .

Detailed ways

The present invention is further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, the thruster for surgical intubation of the present invention comprises a balloon 1, an introduction tube 2 and an outlet tube 3 symmetrically arranged at both ends of the balloon 1, wherein the introduction tube 2 and the outlet tube 3 are located on the same central axis 10, so that the surgical intubation tube 11 can be inserted into the introduction tube 2 and the outlet tube 3. The balloon 1 is made of soft and elastic materials such as silicone and rubber, and deforms when squeezed by hand, and can quickly restore its shape after releasing the hand. The introduction tube 2 and the outlet tube 3 are made of hard materials that are not easy to deform, such as stainless steel, hard plastic, etc. The introduction tube 2 and the outlet tube 3 are fixedly connected to the balloon 1 by an adhesive, and can also be connected to the balloon 1 by a casting molding process to form a whole.

A mounting plate 4 and a guide sleeve 5 are fixedly connected to the inner wall of the balloon 1. The mounting plate 4 is a plate body perpendicular to the central axis. The edge of the mounting plate 4 is fixedly connected to the inner wall of the balloon 1. A through hole is provided at the center of the mounting plate 4, at the position of the central axis 10, so that the surgical cannula 11 can pass through the mounting plate 4. The mounting plate 4 is made of hard material, and supports the inner wall of the balloon here so that the balloon here will not be concave and deformed; the guide sleeve 5 is located between the outlet tube 3 and the mounting plate 4, and the sliding sleeve in the guide sleeve 5 is provided with an arc-shaped spring piece 6, one end of the spring piece 6 is fixedly connected to the mounting plate 4, and the other end is fixedly connected to the friction plate 7. The guide sleeve 5 is a tubular body with a guide hole, which is fixedly connected to the inner wall of the balloon 1 away from the central axis 10. The axis of the guide hole is parallel to the central axis 10, and the middle section of the spring piece 6 is inserted in the guide hole of the guide sleeve 5, so that it can slide freely in the guide hole and is constrained by the guide sleeve 5 and cannot rotate around the central axis 10. The two ends of the spring sheet 6 are close to the central axis 10, and the distance between the middle section and the central axis 10 is greater than the two ends. The connection point between the spring sheet 6 and the mounting plate 4 is located around the through hole. The distance between the friction plate 7 and the central axis 10 is slightly greater than the radius of the surgical cannula 11. When the surgical cannula 11 is installed, the friction plate 7 is very close to the surgical cannula 11 in the relaxed state but does not contact the surgical cannula 11. Once the spring sheet 6 is squeezed by force, the friction plate 7 can quickly contact the surgical cannula 11. As shown in FIG2, the friction plate 7 is semicircular, and multiple spring sheets 6 are symmetrically arranged on both sides of the central axis 10 in groups of two. The number can be 2 or 4 friction sheets. Of course, the number of spring sheets 6 and guide sleeves 5 is consistent with the number of friction sheets 7. The corresponding multiple friction sheets 7 are symmetrically arranged on both sides of the central axis 10, and the surgical cannula 11 located on the central axis 10 is in a state of surrounding and clamping. When in use, the surgical cannula 11 is inserted from the introduction tube 2 into the balloon 1, passed through the cavity surrounded by multiple friction plates 7 and finally led out from the outlet tube 3. When the surgical cannula 11 needs to be pushed forward, just hold the balloon 1 and squeeze it. After the spring sheet 6 is squeezed, the end with the friction plate 7 moves closer to the central axis 10, and the friction plate 7 is pressed on the surgical cannula 11. Multiple friction plates 7 are clamped around the surgical cannula 11 in a ring shape. At this time, continue to squeeze the spring sheet 6 to drive the surgical cannula 11 to move toward the outlet tube 3 through the friction plate 7. A non-return device is provided in the inner cavity of the introduction tube 2. After squeezing the balloon 1, when the spring sheet 6 rebounds after releasing the hand, the non-return device can clamp the surgical cannula 11 to prevent the surgical cannula 11 from rebounding. Repeated squeezing of the balloon 1 to press the spring sheet 6 can make the surgical cannula 11 continuously move toward the outlet tube 3.

As shown in Fig. 1 and Fig. 3, the anti-return device comprises an end cap 8 and a plurality of claws 9 connected to the end cap 8. The end cap 8 is a circular sheet structure with an outer diameter larger than the inner diameter of the introduction tube 2, and is located at the outer end of the introduction tube 2. The center of the end cap 8 is provided with an introduction hole 81, and a plurality of claws 9 are evenly distributed around the introduction hole 81. The outer end of the claw 9 arranged parallel to the axis of the introduction tube 2 is fixedly connected to the end cap 8, and the inner end passes through the introduction tube 2 and extends into the inner cavity of the balloon 1. The claws 9 surrounding the edge of the introduction hole 81 form a tubular structure, and the inner diameter of the tubular structure is slightly larger than the outer diameter of the surgical cannula 11, so that the surgical cannula 11 can be smoothly inserted into the cavity surrounded by the introduction hole 81 and the claws 9. A trumpet-shaped transition section 12 is provided at the junction of the inner wall of the balloon 1 and the introduction tube 2, and a protrusion 91 matching the trumpet-shaped transition section 12 is provided at the inner end of the claw 9, and the protrusion position of the protrusion 91 points to the trumpet-shaped transition section 12. When the surgical cannula 11 moves toward the direction of the outlet tube 3, the surgical cannula 11 drives the claw piece 9 and the end cover 8 to move toward the inside of the balloon 1, and the protrusion 91 separates from the transition section 12, and the movement of the surgical cannula 11 is not hindered; on the contrary, when the surgical cannula 11 withdraws toward the direction of the introduction tube 2, the surgical cannula 11 drives the claw piece 9 and the end cover 8 to move outward, at this time the protrusion 91 is blocked by the transition section 12, and the transition section 12 squeezes the inner end of the claw piece 9 to make it deviate toward the surgical cannula 11, and holds the surgical cannula 11 so that it cannot move, achieving the purpose of preventing reverse movement. When removing the surgical cannula 11, just press the end cover 8 with one hand to keep it at the inner stop point position, and the claw piece 9 no longer moves with the surgical cannula 11, and then the surgical cannula 11 can be smoothly pulled out of the introduction tube 2.

Claims (1)

1. A thruster for surgical intubation, comprising a balloon (1), an introduction tube (2) and an outlet tube (3) symmetrically arranged at both ends of the balloon (1), wherein the introduction tube (2) and the outlet tube (3) are located on the same central axis (10), and characterized in that: a mounting plate (4) and a guide sleeve (5) are fixedly connected to the inner wall of the balloon (1), the mounting plate (4) is a plate body perpendicular to the central axis, the edge of the mounting plate (4) is fixedly connected to the inner wall of the balloon (1), and a through hole is provided at the center of the mounting plate (4) at a position located on the central axis (10); the guide sleeve (5) is located between the outlet tube (3) and the mounting plate (4), and a sliding sleeve of an arc-shaped spring sheet (6) is provided in the guide sleeve (5), one end of the spring sheet (6) is fixedly connected to the mounting plate (4), and the other end is fixedly connected to a friction plate (7); the introduction tube The inner cavity of the balloon (2) is provided with a back-stop device for preventing a surgical cannula (11) located therein from rebounding; the back-stop device comprises an end cover (8) and a plurality of claw pieces (9) connected to the end cover (8); the end cover (8) is a circular sheet structure having an outer diameter larger than the inner diameter of the introduction tube (2); the center of the end cover (8) is provided with an introduction hole (81); a plurality of claw pieces (9) are evenly distributed around the introduction hole (81); the outer end of the claw piece (9) arranged parallel to the axis of the introduction tube (2) is fixedly connected to the end cover (8); the inner end of the claw piece (9) extends through the introduction tube (2) into the inner cavity of the balloon (1); a trumpet-shaped transition section is provided at the junction of the inner wall of the balloon (1) and the introduction tube (2); the inner end of the claw piece (9) is provided with a protrusion (91) matching the trumpet-shaped transition section; the plurality of spring pieces (6) are symmetrically arranged in groups of two on both sides of the central axis (10).